pods-framework / pods

classes/PodsMeta.php

<?php

/**
 * @package Pods
 */
class PodsMeta {

	/**
	 * @var PodsMeta
	 */
	static $instance = null;

The visibility should be declared for property $instance.

	/**
	 * @var PodsAPI
	 */
	private $api;

The property $api is not used and could be removed.

	/**
	 * @var Pods
	 */
	private static $current_pod;

	/**
	 * @var array
	 */
	private static $current_pod_data;

	/**
	 * @var Pods
	 */
	private static $current_field_pod;

	/**
	 * @var int
	 */
	public static $object_identifier = - 1;

	/**
	 * @var array
	 */
	public static $advanced_content_types = array();

The variable name $advanced_content_types exceeds the maximum configured length of 20.

	/**
	 * @var array
	 */
	public static $post_types = array();

	/**
	 * @var array
	 */
	public static $taxonomies = array();

	/**
	 * @var array
	 */
	public static $media = array();

	/**
	 * @var array
	 */
	public static $user = array();

	/**
	 * @var array
	 */
	public static $comment = array();

	/**
	 * @var array
	 */
	public static $settings = array();

	/**
	 * @var array
	 */
	public static $queue = array();

	/**
	 * @var array
	 */
	public static $groups = array();

	/**
	 * @var array
	 */
	public static $old_post_status = array();

	/**
	 * Singleton handling for a basic pods_meta() request
	 *
	 * @return \PodsMeta
	 *
	 * @since 2.3.5
	 */
	public static function init() {

		if ( ! is_object( self::$instance ) ) {
			self::$instance = new PodsMeta();
		}

		return self::$instance;
	}

	/**
	 * @return \PodsMeta

Adding a @return annotation to constructors is generally not recommended as a constructor does not have a meaningful return value.

	 *
	 * @since 2.0
	 */
	public function __construct() {

	}

	/**
	 * @return \PodsMeta
	 */
	public function core() {

		self::$advanced_content_types = pods_api()->load_pods( array( 'type' => 'pod' ) );
		self::$post_types             = pods_api()->load_pods( array( 'type' => 'post_type' ) );
		self::$taxonomies             = pods_api()->load_pods( array( 'type' => 'taxonomy' ) );
		self::$media                  = pods_api()->load_pods( array( 'type' => 'media' ) );
		self::$user                   = pods_api()->load_pods( array( 'type' => 'user' ) );
		self::$comment                = pods_api()->load_pods( array( 'type' => 'comment' ) );
		self::$settings               = pods_api()->load_pods( array( 'type' => 'settings' ) );

		// Handle Post Type Editor (needed for Pods core)

		// Loop through and add meta boxes for individual types (can't use this, Tabify doesn't pick it up)
		/*

53% of this comment could be valid code. Did you maybe forget this after debugging?

        foreach ( self::$post_types as $post_type ) {
            $post_type_name = $post_type[ 'name' ];

            if ( !empty( $post_type[ 'object' ] ) )
                $post_type_name = $post_type[ 'object' ];

            add_action( 'add_meta_boxes_' . $post_type_name, array( $this, 'meta_post_add' ) );
        }
        */

		add_action( 'add_meta_boxes', array( $this, 'meta_post_add' ) );
		add_action( 'transition_post_status', array( $this, 'save_post_detect_new' ), 10, 3 );
		add_action( 'save_post', array( $this, 'save_post' ), 10, 3 );
		add_filter( 'wp_insert_post_data', array( $this, 'save_post_track_changed_fields' ), 10, 2 );

		if ( apply_filters( 'pods_meta_handler', true, 'post' ) ) {
			// Handle *_post_meta
			if ( apply_filters( 'pods_meta_handler_get', true, 'post' ) ) {
				add_filter( 'get_post_metadata', array( $this, 'get_post_meta' ), 10, 4 );
			}

			if ( ! pods_tableless() ) {
				add_filter( 'add_post_metadata', array( $this, 'add_post_meta' ), 10, 5 );
				add_filter( 'update_post_metadata', array( $this, 'update_post_meta' ), 10, 5 );
				add_filter( 'delete_post_metadata', array( $this, 'delete_post_meta' ), 10, 5 );
			}
		}

		add_action( 'delete_post', array( $this, 'delete_post' ), 10, 1 );

		if ( ! empty( self::$taxonomies ) ) {
			$has_fields = false;

			// Handle Taxonomy Editor
			foreach ( self::$taxonomies as $taxonomy ) {

The expression self::$taxonomies of type array|object|integer|double|string|boolean is not guaranteed to be traversable. How about adding an additional type check?

				if ( empty( $taxonomy['fields'] ) ) {
					continue;
				}

				$has_fields = true;

				$taxonomy_name = $taxonomy['name'];

				if ( ! empty( $taxonomy['object'] ) ) {
					$taxonomy_name = $taxonomy['object'];
				}

				add_action( $taxonomy_name . '_edit_form_fields', array( $this, 'meta_taxonomy' ), 10, 2 );
				add_action( $taxonomy_name . '_add_form_fields', array( $this, 'meta_taxonomy' ), 10, 1 );
			}

			if ( $has_fields ) {
				// Handle Term Editor
				add_action( 'edited_term', array( $this, 'save_taxonomy' ), 10, 3 );
				add_action( 'create_term', array( $this, 'save_taxonomy' ), 10, 3 );
				add_action( 'edit_terms', array( $this, 'save_taxonomy_track_changed_fields' ), 10, 2 );

				if ( apply_filters( 'pods_meta_handler', true, 'term' ) ) {
					// Handle *_term_meta
					if ( apply_filters( 'pods_meta_handler_get', true, 'term' ) ) {
						add_filter( 'get_term_metadata', array( $this, 'get_term_meta' ), 10, 4 );
					}

					if ( ! pods_tableless() ) {
						add_filter( 'add_term_metadata', array( $this, 'add_term_meta' ), 10, 5 );
						add_filter( 'update_term_metadata', array( $this, 'update_term_meta' ), 10, 5 );
						add_filter( 'delete_term_metadata', array( $this, 'delete_term_meta' ), 10, 5 );
					}
				}
			}
		}

		/**
		 * Fires after a previously shared taxonomy term is split into two separate terms.
		 *
		 * @since 4.2.0
		 *
		 * @param int    $term_id          ID of the formerly shared term.
		 * @param int    $new_term_id      ID of the new term created for the $term_taxonomy_id.
		 * @param int    $term_taxonomy_id ID for the term_taxonomy row affected by the split.
		 * @param string $taxonomy         Taxonomy for the split term.
		 */
		add_action( 'split_shared_term', array( $this, 'split_shared_term' ), 10, 4 );

		// Handle Delete
		add_action( 'delete_term_taxonomy', array( $this, 'delete_taxonomy' ), 10, 1 );

		if ( ! empty( self::$media ) ) {
			add_action( 'add_meta_boxes', array( $this, 'meta_post_add' ) );
			add_action( 'wp_ajax_save-attachment-compat', array( $this, 'save_media_ajax' ), 0 );

			add_filter( 'attachment_fields_to_edit', array( $this, 'meta_media' ), 10, 2 );

			add_filter( 'attachment_fields_to_save', array( $this, 'save_media' ), 10, 2 );
			add_filter( 'wp_update_attachment_metadata', array( $this, 'save_media' ), 10, 2 );
			add_filter( 'wp_insert_attachment_data', array( $this, 'save_post_track_changed_fields' ), 10, 2 );

			if ( apply_filters( 'pods_meta_handler', true, 'post' ) ) {
				// Handle *_post_meta
				if ( ! has_filter( 'get_post_metadata', array( $this, 'get_post_meta' ) ) ) {
					if ( apply_filters( 'pods_meta_handler_get', true, 'post' ) ) {
						add_filter( 'get_post_metadata', array( $this, 'get_post_meta' ), 10, 4 );
					}

					if ( ! pods_tableless() ) {
						add_filter( 'add_post_metadata', array( $this, 'add_post_meta' ), 10, 5 );
						add_filter( 'update_post_metadata', array( $this, 'update_post_meta' ), 10, 5 );
						add_filter( 'delete_post_metadata', array( $this, 'delete_post_meta' ), 10, 5 );
					}
				}
			}
		}

		// Handle Delete
		add_action( 'delete_attachment', array( $this, 'delete_media' ), 10, 1 );

		if ( ! empty( self::$user ) ) {
			// Handle User Editor
			add_action( 'show_user_profile', array( $this, 'meta_user' ) );
			add_action( 'edit_user_profile', array( $this, 'meta_user' ) );
			add_action( 'user_register', array( $this, 'save_user' ) );
			add_action( 'profile_update', array( $this, 'save_user' ), 10, 2 );
			add_filter( 'pre_user_login', array( $this, 'save_user_track_changed_fields' ) );

			if ( apply_filters( 'pods_meta_handler', true, 'user' ) ) {
				// Handle *_user_meta
				if ( apply_filters( 'pods_meta_handler_get', true, 'user' ) ) {
					add_filter( 'get_user_metadata', array( $this, 'get_user_meta' ), 10, 4 );
				}

				if ( ! pods_tableless() ) {
					add_filter( 'add_user_metadata', array( $this, 'add_user_meta' ), 10, 5 );
					add_filter( 'update_user_metadata', array( $this, 'update_user_meta' ), 10, 5 );
					add_filter( 'delete_user_metadata', array( $this, 'delete_user_meta' ), 10, 5 );
				}
			}
		}

		// Handle Delete
		add_action( 'delete_user', array( $this, 'delete_user' ), 10, 1 );

		if ( ! empty( self::$comment ) ) {
			// Handle Comment Form / Editor
			add_action( 'comment_form_logged_in_after', array( $this, 'meta_comment_new_logged_in' ), 10, 2 );
			add_filter( 'comment_form_default_fields', array( $this, 'meta_comment_new' ) );
			add_action( 'add_meta_boxes_comment', array( $this, 'meta_comment_add' ) );
			add_filter( 'pre_comment_approved', array( $this, 'validate_comment' ), 10, 2 );
			add_action( 'comment_post', array( $this, 'save_comment' ) );
			add_action( 'edit_comment', array( $this, 'save_comment' ) );
			add_action( 'wp_update_comment_data', array( $this, 'save_comment_track_changed_fields' ), 10, 3 );

			if ( apply_filters( 'pods_meta_handler', true, 'comment' ) ) {
				// Handle *_comment_meta
				add_filter( 'get_comment_metadata', array( $this, 'get_comment_meta' ), 10, 4 );

				if ( ! pods_tableless() ) {
					add_filter( 'add_comment_metadata', array( $this, 'add_comment_meta' ), 10, 5 );
					add_filter( 'update_comment_metadata', array( $this, 'update_comment_meta' ), 10, 5 );
					add_filter( 'delete_comment_metadata', array( $this, 'delete_comment_meta' ), 10, 5 );
				}
			}
		}

		// Handle Delete
		add_action( 'delete_comment', array( $this, 'delete_comment' ), 10, 1 );

		// @todo Patch core to provide $option back in filters, patch core to add filter pre_add_option to add_option
		/*if ( !empty( self::$settings ) ) {

53% of this comment could be valid code. Did you maybe forget this after debugging?

            foreach ( self::$settings as $setting_pod ) {
                foreach ( $setting_pod[ 'fields' ] as $option ) {
                    add_filter( 'pre_option_' . $setting_pod[ 'name' ] . '_' . $option[ 'name' ], array( $this, 'get_option' ), 10, 1 );
                    add_action( 'add_option_' . $setting_pod[ 'name' ] . '_' . $option[ 'name' ], array( $this, 'add_option' ), 10, 2 );
                    add_filter( 'pre_update_option_' . $setting_pod[ 'name' ] . '_' . $option[ 'name' ], array( $this, 'update_option' ), 10, 2 );
                }
            }
        }*/

		if ( is_admin() ) {
			$this->integrations();
		}

		add_action( 'init', array( $this, 'enqueue' ), 9 );

		if ( function_exists( 'pll_current_language' ) ) {
			add_action( 'init', array( $this, 'cache_pods' ), 101 );
		}

		do_action( 'pods_meta_init' );

		return $this;
	}

	/**
	 *
	 */
	public static function enqueue() {

		foreach ( self::$queue as $type => $objects ) {
			foreach ( $objects as $pod_name => $pod ) {
				pods_transient_set( 'pods_pod_' . $pod_name, $pod );
			}

			self::$$type = array_merge( self::$$type, $objects );
		}
	}

	/**
	 * Go back through and cache the Pods now that Polylang has loaded
	 */
	public function cache_pods() {

		self::$advanced_content_types = pods_api()->load_pods( array( 'type' => 'pod', 'refresh' => true ) );
		self::$post_types             = pods_api()->load_pods( array( 'type' => 'post_type', 'refresh' => true ) );
		self::$taxonomies             = pods_api()->load_pods( array( 'type' => 'taxonomy', 'refresh' => true ) );
		self::$media                  = pods_api()->load_pods( array( 'type' => 'media', 'refresh' => true ) );
		self::$user                   = pods_api()->load_pods( array( 'type' => 'user', 'refresh' => true ) );
		self::$comment                = pods_api()->load_pods( array( 'type' => 'comment', 'refresh' => true ) );
		self::$settings               = pods_api()->load_pods( array( 'type' => 'settings', 'refresh' => true ) );
	}

	/**
	 * @param $type
	 * @param $pod
	 *
	 * @return array|bool|int

Consider making the return type a bit more specific; maybe use array|integer|false.

	 */
	public function register( $type, $pod ) {

		$pod_type = $type;

		if ( 'post_type' == $type ) {
			$type = 'post_types';
		} elseif ( 'taxonomy' == $type ) {
			$type = 'taxonomies';
		} elseif ( 'pod' == $type ) {
			$type = 'advanced_content_types';
		}

		if ( ! isset( self::$queue[ $type ] ) ) {
			self::$queue[ $type ] = array();
		}

		if ( is_array( $pod ) && ! empty( $pod ) && ! isset( $pod['name'] ) ) {
			$data = array();

			foreach ( $pod as $p ) {
				$data[] = $this->register( $type, $p );
			}

			return $data;
		}

		$pod['type'] = $pod_type;
		$pod         = pods_api()->save_pod( $pod, false, false );

		if ( ! empty( $pod ) ) {
			self::$object_identifier --;

			self::$queue[ $type ][ $pod['name'] ] = $pod;

			return $pod;
		}

		return false;
	}

	/**
	 * @param $pod
	 * @param $field
	 *
	 * @return array|bool|int

Consider making the return type a bit more specific; maybe use array|integer|false.

	 */
	public function register_field( $pod, $field ) {

		if ( is_array( $pod ) && ! empty( $pod ) && ! isset( $pod['name'] ) ) {
			$data = array();

			foreach ( $pod as $p ) {
				$data[] = $this->register_field( $p, $field );
			}

			return $data;
		}

		if ( empty( self::$current_pod_data ) || ! is_object( self::$current_pod_data ) || self::$current_pod_data['name'] != $pod ) {
			self::$current_pod_data = pods_api()->load_pod( array( 'name' => $pod ), false );
		}

		$pod = self::$current_pod_data;

		if ( ! empty( $pod ) ) {
			$type = $pod['type'];

			if ( 'post_type' == $pod['type'] ) {
				$type = 'post_types';
			} elseif ( 'taxonomy' == $pod['type'] ) {
				$type = 'taxonomies';
			} elseif ( 'pod' == $pod['type'] ) {
				$type = 'advanced_content_types';
			}

			if ( ! isset( self::$queue[ $pod['type'] ] ) ) {
				self::$queue[ $type ] = array();
			}

			$field = pods_api()->save_field( $field, false, false, $pod['id'] );

			if ( ! empty( $field ) ) {
				$pod['fields'][ $field['name'] ] = $field;

				self::$queue[ $type ][ $pod['name'] ] = $pod;

				return $field;
			}
		}

		return false;
	}

	/**
	 *
	 */
	public function integrations() {

		// `ac_is_version_gte` is since AC 3.0+
		if ( ! function_exists( 'ac_is_version_gte' ) ) {
			// Codepress Admin Columns < 2.x
			add_filter( 'cac/storage_model/meta_keys', array( $this, 'cpac_meta_keys' ), 10, 2 );
			add_filter( 'cac/post_types', array( $this, 'cpac_post_types' ), 10, 1 );
			add_filter( 'cac/column/meta/value', array( $this, 'cpac_meta_value' ), 10, 3 );
		} else {
			// Codepress Admin Columns 3.x +
			add_filter( 'ac/column/custom_field/meta_keys', array( $this, 'cpac_meta_keys' ), 10, 2 );
			add_filter( 'ac/post_types', array( $this, 'cpac_post_types' ), 10, 1 );
			add_filter( 'ac/column/value', array( $this, 'cpac_meta_value' ), 10, 3 );
		}
	}

	/**
	 * Admin Columns: Remove internal meta keys + add existing (public) Pod field keys.
	 *
	 * @param array                           $meta_fields
	 * @param \AC_Settings_Column_CustomField $storage_model
	 *
	 * @return array
	 */
	public function cpac_meta_keys( $meta_fields, $storage_model ) {

		$object_type = 'post_type';
		$object      = null;
		$obj         = null;

		if ( ! method_exists( $storage_model, 'get_column' ) ) {
			// Codepress Admin Columns < 2.x
			$object = $storage_model->key;
			$type   = $storage_model->type;
		} else {
			// Codepress Admin Columns 3.x +
			$obj    = $storage_model->get_column();
			$object = $obj->get_list_screen()->get_key();
			$type   = $obj->get_list_screen()->get_meta_type();
		}

		if ( in_array( $type, array( 'wp-links', 'link' ), true ) ) {
			$object_type = $object = 'link';
		} elseif ( in_array( $type, array( 'wp-media', 'media' ), true ) ) {
			$object_type = $object = 'media';
		} elseif ( in_array( $type, array( 'wp-users', 'user' ), true ) ) {
			$object_type = $object = 'user';
		} elseif ( in_array( $type, array( 'wp-comments', 'comment' ), true ) ) {
			$object_type = $object = 'comment';
		} elseif ( 'taxonomy' === $type ) {
			$object_type = 'taxonomy';
			if ( ! $obj ) {
				// Codepress Admin Columns < 2.x
				$object = $storage_model->taxonomy;
			} else {
				// Codepress Admin Columns 3.x +
				$object = $obj->get_taxonomy();
			}
		}

		if ( empty( self::$current_pod_data ) || ! is_object( self::$current_pod_data ) || self::$current_pod_data['name'] != $object ) {
			self::$current_pod_data = pods_api()->load_pod( array( 'name' => $object ), false );
		}

		$pod = self::$current_pod_data;

		// Add Pods fields
		if ( ! empty( $pod ) && $object_type == $pod['type'] ) {
			foreach ( $pod['fields'] as $field => $field_data ) {
				if ( ! is_array( $meta_fields ) ) {
					$meta_fields = array();
				}

				if ( ! in_array( $field, $meta_fields ) ) {
					$meta_fields[] = $field;
				}
			}
		}

		// Remove internal Pods fields
		if ( is_array( $meta_fields ) ) {
			foreach ( $meta_fields as $k => $meta_field ) {
				if ( 0 === strpos( $meta_field, '_pods_' ) ) {
					unset( $meta_fields[ $k ] );
				}
			}
		}

		return $meta_fields;
	}

	/**
	 * Admin Columns: Remove internal Pods post types.
	 *
	 * @param  array $post_types
	 *
	 * @return array
	 */
	public function cpac_post_types( $post_types ) {

		foreach ( $post_types as $post_type => $post_type_name ) {
			if ( 0 === strpos( $post_type, '_pods_' ) || 0 === strpos( $post_type_name, '_pods_' ) ) {
				unset( $post_types[ $post_type ] );
			}
		}

		return $post_types;
	}

	/**
	 * Admin Columns: For custom field column types.
	 *
	 * @param mixed      $meta
	 * @param int        $id
	 * @param \AC_Column $obj
	 *
	 * @return mixed
	 */
	public function cpac_meta_value( $meta, $id, $obj ) {

		$tableless_field_types = PodsForm::tableless_field_types();

The variable name $tableless_field_types exceeds the maximum configured length of 20.

		$object_type = 'post_type';
		$object      = null;
		$type        = null;

		if ( ! method_exists( $obj, 'get_list_screen' ) ) {
			// Codepress Admin Columns < 2.x
			$object = $obj->storage_model->key;
			$type   = $obj->storage_model->type;
		} else {
			// Codepress Admin Columns 3.x +
			$object = $obj->get_list_screen()->get_key();
			$type   = $obj->get_list_screen()->get_meta_type();
		}

		if ( in_array( $type, array( 'wp-links', 'link' ), true ) ) {
			$object_type = $object = 'link';
		} elseif ( in_array( $type, array( 'wp-media', 'media' ), true ) ) {
			$object_type = $object = 'media';
		} elseif ( in_array( $type, array( 'wp-users', 'user' ), true ) ) {
			$object_type = $object = 'user';
		} elseif ( in_array( $type, array( 'wp-comments', 'comment' ), true ) ) {
			$object_type = $object = 'comment';
		} elseif ( 'taxonomy' === $type ) {
			$object_type = 'taxonomy';
			if ( ! method_exists( $obj, 'get_taxonomy' ) ) {
				// Codepress Admin Columns < 2.x
				$object = $obj->storage_model->taxonomy;
			} else {
				// Codepress Admin Columns 3.x +
				$object = $obj->get_taxonomy();
			}
		}

		$field      = ( "cpachidden" === substr( $obj->get_option( 'field' ), 0, 10 ) ) ? str_replace( 'cpachidden', '', $obj->get_option( 'field' ) ) : $obj->get_option( 'field' );

The string literal cpachidden does not require double quotes, as per coding-style, please use single quotes.

		$field_type = $obj->get_option( 'field_type' );

		if ( empty( self::$current_pod_data ) || ! is_object( self::$current_pod_data ) || self::$current_pod_data['name'] !== $object ) {
			self::$current_pod_data = pods_api()->load_pod( array( 'name' => $object ), false );
		}

		$pod = self::$current_pod_data;

		// Add Pods fields
		if ( ! empty( $pod ) && isset( $pod['fields'][ $field ] ) ) {
			if ( in_array( $pod['type'], array(
					'post_type',
					'media',
					'taxonomy',
					'user',
					'comment',
					'media'
				), true ) && ( ! empty( $field_type ) || in_array( $pod['fields'][ $field ]['type'], $tableless_field_types, true ) ) ) {

This line of the multi-line function call does not seem to be indented correctly. Expected 12 spaces, but found 16.

				$metadata_type = $pod['type'];

				if ( in_array( $metadata_type, array( 'post_type', 'media' ), true ) ) {
					$metadata_type = 'post';
				} elseif ( 'taxonomy' === $metadata_type ) {
					$metadata_type = 'term';
				}

				if ( 'term' === $metadata_type && ! function_exists( 'get_term_meta' ) ) {
					$podterms = pods( $pod['name'], $id );

					$meta = $podterms->field( $field );
				} else {
					$meta = get_metadata( $metadata_type, $id, $field, ( 'array' !== $field_type ) );
				}
			} elseif ( 'taxonomy' === $pod['type'] ) {
				$podterms = pods( $pod['name'], $id );

				$meta = $podterms->field( $field );
			}

			$meta = PodsForm::field_method( $pod['fields'][ $field ]['type'], 'ui', $id, $meta, $field, array_merge( $pod['fields'][ $field ], $pod['fields'][ $field ]['options'] ), $pod['fields'], $pod );
		}

		return $meta;
	}

	/**
	 * Add a meta group of fields to add/edit forms
	 *
	 * @param string|array $pod      The pod or type of element to attach the group to.
	 * @param string       $label    Title of the edit screen section, visible to user.
	 * @param string|array $fields   Either a comma separated list of text fields or an associative array containing
	 *                               field infomration.
	 * @param string       $context  (optional) The part of the page where the edit screen section should be shown
	 *                               ('normal', 'advanced', or 'side').
	 * @param string       $priority (optional) The priority within the context where the boxes should show ('high',
	 *                               'core', 'default' or 'low').
	 *
	 * @since 2.0
	 *
	 * @return mixed|void
	 */
	public function group_add( $pod, $label, $fields, $context = 'normal', $priority = 'default' ) {

		if ( is_array( $pod ) && ! empty( $pod ) && ! isset( $pod['name'] ) ) {
			foreach ( $pod as $p ) {
				$this->group_add( $p, $label, $fields, $context, $priority );
			}

			return true;
		}

		if ( ! is_array( $pod ) ) {
			if ( empty( self::$current_pod_data ) || ! is_object( self::$current_pod_data ) || self::$current_pod_data['name'] != $pod ) {
				self::$current_pod_data = pods_api()->load_pod( array( 'name' => $pod ), false );
			}

			if ( ! empty( self::$current_pod_data ) ) {
				$pod = self::$current_pod_data;
			} else {
				$type = 'post_type';

				if ( in_array( $pod, array( 'media', 'user', 'comment' ) ) ) {
					$type = $pod;
				}

				$pod = array(
					'name' => $pod,
					'type' => $type
				);
			}
		}

		if ( is_array( $pod ) && ! isset( $pod['id'] ) ) {
			$defaults = array(
				'name' => '',
				'type' => 'post_type'
			);

			$pod = array_merge( $defaults, $pod );
		}

		if ( 'post' == $pod['type'] ) {
			$pod['type'] = 'post_type';
		}

		if ( empty( $pod['name'] ) && isset( $pod['object'] ) && ! empty( $pod['object'] ) ) {
			$pod['name'] = $pod['object'];
		} elseif ( ! isset( $pod['object'] ) || empty( $pod['object'] ) ) {
			$pod['object'] = $pod['name'];
		}

		if ( empty( $pod['object'] ) ) {
			return pods_error( __( 'Object required to add a Pods meta group', 'pods' ) );
		}

		$object_name = $pod['object'];

		if ( 'pod' == $pod['type'] ) {
			$object_name = $pod['name'];
		}

		if ( ! isset( self::$groups[ $pod['type'] ] ) ) {
			self::$groups[ $pod['type'] ] = array();
		}

		if ( ! isset( self::$groups[ $pod['type'] ][ $object_name ] ) ) {
			self::$groups[ $pod['type'] ][ $object_name ] = array();
		}

		$_fields = array();

		if ( ! is_array( $fields ) ) {
			$fields = explode( ',', $fields );
		}

		foreach ( $fields as $k => $field ) {
			$name = $k;

			$defaults = array(
				'name'  => $name,
				'label' => $name,
				'type'  => 'text'
			);

			if ( ! is_array( $field ) ) {
				$name = trim( $field );

				$field = array(
					'name'  => $name,
					'label' => $name
				);
			}

			$field = array_merge( $defaults, $field );

			$field['name'] = trim( $field['name'] );

			if ( isset( $pod['fields'] ) && isset( $pod['fields'][ $field['name'] ] ) ) {
				$field = array_merge( $field, $pod['fields'][ $field['name'] ] );
			}

			$_fields[ $k ] = $field;
		}

		// Setup field options
		$fields = PodsForm::fields_setup( $_fields );

		$group = array(
			'pod'      => $pod,
			'label'    => $label,
			'fields'   => $fields,
			'context'  => $context,
			'priority' => $priority
		);

		// Filter group data, pass vars separately for reference down the line (in case array changed by other filter)
		$group = apply_filters( 'pods_meta_group_add_' . $pod['type'] . '_' . $object_name, $group, $pod, $label, $fields );
		$group = apply_filters( 'pods_meta_group_add_' . $pod['type'], $group, $pod, $label, $fields );
		$group = apply_filters( 'pods_meta_group_add', $group, $pod, $label, $fields );

		self::$groups[ $pod['type'] ][ $object_name ][] = $group;

		// Hook it up!
		if ( 'post_type' == $pod['type'] ) {
			if ( ! has_action( 'add_meta_boxes', array( $this, 'meta_post_add' ) ) ) {
				add_action( 'add_meta_boxes', array( $this, 'meta_post_add' ) );
			}

			/*if ( !has_action( 'save_post', array( $this, 'save_post' ), 10, 3 ) )

60% of this comment could be valid code. Did you maybe forget this after debugging?

                add_action( 'save_post', array( $this, 'save_post' ), 10, 3 );*/
		} elseif ( 'taxonomy' == $pod['type'] ) {
			if ( ! has_action( $pod['object'] . '_edit_form_fields', array( $this, 'meta_taxonomy' ), 10, 2 ) ) {
				add_action( $pod['object'] . '_edit_form_fields', array( $this, 'meta_taxonomy' ), 10, 2 );
				add_action( $pod['object'] . '_add_form_fields', array( $this, 'meta_taxonomy' ), 10, 1 );
			}

			if ( ! has_action( 'edited_term', array( $this, 'save_taxonomy' ), 10, 3 ) ) {
				add_action( 'edited_term', array( $this, 'save_taxonomy' ), 10, 3 );
				add_action( 'create_term', array( $this, 'save_taxonomy' ), 10, 3 );
			}
		} elseif ( 'media' == $pod['type'] ) {
			if ( ! has_filter( 'wp_update_attachment_metadata', array( $this, 'save_media' ), 10, 2 ) ) {
				add_action( 'add_meta_boxes', array( $this, 'meta_post_add' ) );
				add_action( 'wp_ajax_save-attachment-compat', array( $this, 'save_media_ajax' ), 0 );

				add_filter( 'attachment_fields_to_edit', array( $this, 'meta_media' ), 10, 2 );

				add_filter( 'attachment_fields_to_save', array( $this, 'save_media' ), 10, 2 );
				add_filter( 'wp_update_attachment_metadata', array( $this, 'save_media' ), 10, 2 );
			}
		} elseif ( 'user' == $pod['type'] ) {
			if ( ! has_action( 'show_user_profile', array( $this, 'meta_user' ) ) ) {
				add_action( 'show_user_profile', array( $this, 'meta_user' ) );
				add_action( 'edit_user_profile', array( $this, 'meta_user' ) );
				add_action( 'user_register', array( $this, 'save_user' ) );
				add_action( 'profile_update', array( $this, 'save_user' ), 10, 2 );
			}
		} elseif ( 'comment' == $pod['type'] ) {
			if ( ! has_action( 'comment_form_logged_in_after', array( $this, 'meta_comment_new_logged_in' ), 10, 2 ) ) {
				add_action( 'comment_form_logged_in_after', array( $this, 'meta_comment_new_logged_in' ), 10, 2 );
				add_filter( 'comment_form_default_fields', array( $this, 'meta_comment_new' ) );
				add_action( 'add_meta_boxes_comment', array( $this, 'meta_comment_add' ) );
				add_action( 'wp_insert_comment', array( $this, 'save_comment' ) );
				add_action( 'edit_comment', array( $this, 'save_comment' ) );
			}
		}
	}

	/**
	 * @param $type
	 * @param $name
	 *
	 * @return array|bool|mixed|void
	 */
	public function object_get( $type, $name ) {

		$object = self::$post_types;

		if ( 'term' == $type ) {
			$type = 'taxonomy';
		}

		if ( 'taxonomy' == $type ) {
			$object = self::$taxonomies;
		} elseif ( 'media' == $type ) {
			$object = self::$media;
		} elseif ( 'user' == $type ) {
			$object = self::$user;
		} elseif ( 'comment' == $type ) {
			$object = self::$comment;
		}

		if ( 'pod' != $type && ! empty( $object ) && is_array( $object ) && isset( $object[ $name ] ) ) {
			$pod = $object[ $name ];
		} else {
			if ( empty( self::$current_pod_data ) || ! is_object( self::$current_pod_data ) || self::$current_pod_data['name'] != $name ) {
				self::$current_pod_data = pods_api()->load_pod( array( 'name' => $name ), false );
			}

			$pod = self::$current_pod_data;
		}

		if ( empty( $pod ) ) {
			return array();
		}

		$defaults = array(
			'name'   => 'post',
			'object' => 'post',
			'type'   => 'post_type'
		);

		$pod = array_merge( $defaults, (array) $pod );

		if ( empty( $pod['name'] ) ) {
			$pod['name'] = $pod['object'];
		} elseif ( empty( $pod['object'] ) ) {
			$pod['object'] = $pod['name'];
		}

		if ( $pod['type'] != $type ) {
			return array();
		}

		return $pod;
	}

	/**
	 * @param $type
	 * @param $name
	 * @param $default_fields
	 *
	 * @return array
	 */
	public function groups_get( $type, $name, $default_fields = null ) {

		if ( 'post_type' == $type && 'attachment' == $name ) {
			$type = 'media';
			$name = 'media';
		} elseif ( 'term' == $type ) {
			$type = 'taxonomy';
		}

		do_action( 'pods_meta_groups', $type, $name );

		$pod    = array();
		$fields = array();

		$object = self::$post_types;

		if ( 'taxonomy' == $type ) {
			$object = self::$taxonomies;
		} elseif ( 'media' == $type ) {
			$object = self::$media;
		} elseif ( 'user' == $type ) {
			$object = self::$user;
		} elseif ( 'comment' == $type ) {
			$object = self::$comment;
		} elseif ( 'pod' == $type ) {
			$object = self::$advanced_content_types;
		}

		if ( ! empty( $object ) && is_array( $object ) && isset( $object[ $name ] ) ) {
			$fields = $object[ $name ]['fields'];
		} else {
			if ( empty( self::$current_pod_data ) || ! is_object( self::$current_pod_data ) || self::$current_pod_data['name'] != $name ) {
				self::$current_pod_data = pods_api()->load_pod( array( 'name' => $name ), false );
			}

			$pod = self::$current_pod_data;

			if ( ! empty( $pod ) ) {
				$fields = $pod['fields'];
			}
		}

		if ( null !== $default_fields ) {
			$fields = $default_fields;
		}

		$defaults = array(
			'name'   => 'post',
			'object' => 'post',
			'type'   => 'post_type'
		);

		$pod = array_merge( $defaults, (array) $pod );

		if ( empty( $pod['name'] ) ) {
			$pod['name'] = $pod['object'];
		} elseif ( empty( $pod['object'] ) ) {
			$pod['object'] = $pod['name'];
		}

		if ( $pod['type'] != $type ) {
			return array();
		}

		$groups = array(
			array(
				'pod'      => $pod,
				/**
				 * Filter the title of the Pods Metabox In The Post Editor
				 *
				 * @param string  $title  The title to use, default is 'More Fields'
				 * @param obj|Pod $pod    Current Pods Object
				 * @param array   $fields Array of fields that will go in the metabox
				 * @param string  $type   The type of Pod
				 * @param string  $name   Name of the Pod
				 *
				 * @return string The title for the metabox.
				 *
				 * @since unknown
				 */
				'label'    => apply_filters( 'pods_meta_default_box_title', __( 'More Fields', 'pods' ), $pod, $fields, $type, $name ),
				'fields'   => $fields,
				'context'  => 'normal',
				'priority' => 'default'
			)
		);

		if ( isset( self::$groups[ $type ] ) && isset( self::$groups[ $type ][ $name ] ) ) {
			$groups = self::$groups[ $type ][ $name ];
		}

		/**
		 * Filter the array of field groups
		 *
		 * @param array  $groups Array of groups
		 * @param string $type   The type of Pod
		 * @param string $name   Name of the Pod
		 *
		 * @since 2.6.6
		 */
		return apply_filters( 'pods_meta_groups_get', $groups, $type, $name );
	}

	/**
	 * @param      $post_type
	 * @param null $post
	 */
	public function meta_post_add( $post_type, $post = null ) {

		if ( 'comment' == $post_type ) {
			return;
		}

		if ( is_object( $post ) ) {
			$post_type = $post->post_type;
		}

		$groups           = $this->groups_get( 'post_type', $post_type );
		$pods_field_found = false;

		foreach ( $groups as $group ) {
			if ( empty( $group['fields'] ) ) {
				continue;
			}

			$field_found  = false;
			$group_hidden = true;

			foreach ( $group['fields'] as $field ) {
				if ( false !== PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'] ) ) {
					$field_found = true;
				}
				if ( ! isset( $field['options']['hidden'] ) || 1 != (int) $field['options']['hidden'] ) {
					$group_hidden = false;
				}
			}

			if ( $group_hidden ) {
				continue;
			}

			if ( empty( $group['label'] ) ) {
				$group['label'] = get_post_type_object( $post_type )->labels->label;
			}

			if ( $field_found ) {
				$pods_field_found = true;
				add_meta_box( 'pods-meta-' . sanitize_title( $group['label'] ), $group['label'], array(
						$this,
						'meta_post'
					), $post_type, $group['context'], $group['priority'], array( 'group' => $group ) );

This line of the multi-line function call does not seem to be indented correctly. Expected 16 spaces, but found 20.

			}
		}

		if ( $pods_field_found ) {
			// Only add the classes to forms that actually have pods fields
			add_action( 'post_edit_form_tag', array( $this, 'add_class_submittable' ) );
		}
	}

	/**
	 *
	 * Called by 'post_edit_form_tag' action to include the classes in the <form> tag
	 *
	 */
	public function add_class_submittable() {

		echo ' class="pods-submittable pods-form"';
	}

	/**
	 * @param $post
	 * @param $metabox
	 */
	public function meta_post( $post, $metabox ) {

		wp_enqueue_style( 'pods-form' );
		wp_enqueue_script( 'pods' );

		$pod_type = 'post';

		if ( 'attachment' == $post->post_type ) {
			$pod_type = 'media';
		}

		do_action( 'pods_meta_' . __FUNCTION__, $post );

		$hidden_fields = array();

		$id = null;

		if ( is_object( $post ) && false === strpos( $_SERVER['REQUEST_URI'], '/post-new.php' ) ) {
			$id = $post->ID;
		}

		if ( empty( self::$current_pod_data ) || ! is_object( self::$current_pod ) || self::$current_pod->pod != $metabox['args']['group']['pod']['name'] ) {
			self::$current_pod = pods( $metabox['args']['group']['pod']['name'], $id, true );
		} elseif ( self::$current_pod->id() != $id ) {
			self::$current_pod->fetch( $id );
		}

		$pod = self::$current_pod;

		$fields = $metabox['args']['group']['fields'];

		/**
		 * Filter the fields used for the Pods metabox group
		 *
		 * @since 2.6.6
		 *
		 * @param array   $fields  Fields from the current Pod metabox group
		 * @param int     $id      Post ID
		 * @param WP_Post $post    Post object
		 * @param array   $metabox Metabox args from the current Pod metabox group
		 * @param Pods    $pod     Pod object
		 */
		$fields = apply_filters( 'pods_meta_post_fields', $fields, $id, $post, $metabox, $pod );

		if ( empty( $fields ) ) {
			_e( 'There are no fields to display', 'pods' );

			return;
		}
		?>
		<table class="form-table pods-metabox pods-admin pods-dependency">
			<?php
			echo PodsForm::field( 'pods_meta', wp_create_nonce( 'pods_meta_' . $pod_type ), 'hidden' );

			foreach ( $fields as $field ) {
				if ( false === PodsForm::permission( $field['type'], $field['name'], $field['options'], $fields, $pod, $id ) ) {
					if ( pods_var( 'hidden', $field['options'], false ) ) {
						$field['type'] = 'hidden';
					} else {
						continue;
					}
				} elseif ( ! pods_has_permissions( $field['options'] ) && pods_var( 'hidden', $field['options'], false ) ) {
					$field['type'] = 'hidden';
				}

				$value = '';

				if ( ! empty( $pod ) ) {
					pods_no_conflict_on( 'post' );

					$value = $pod->field( array( 'name' => $field['name'], 'in_form' => true ) );

					pods_no_conflict_off( 'post' );
				} elseif ( ! empty( $id ) ) {
					$value = get_post_meta( $id, $field['name'], true );
				}

				if ( 'hidden' == $field['type'] ) {
					$hidden_fields[] = array(
						'field' => $field,
						'value' => $value
					);
				} else {
					$dep_options = PodsForm::dependencies( $field, 'pods-meta-' );
					$dep_classes = $dep_options['classes'];
					$dep_data    = $dep_options['data'];

					do_action( 'pods_meta_' . __FUNCTION__ . '_' . $field['name'], $post, $field, $pod );
					?>
					<tr class="form-field pods-field pods-field-input <?php echo esc_attr( 'pods-form-ui-row-type-' . $field['type'] . ' pods-form-ui-row-name-' . PodsForm::clean( $field['name'], true ) ); ?> <?php echo esc_attr( $dep_classes ); ?>" <?php PodsForm::data( $dep_data ); ?>">
					<th scope="row" valign="top"><?php echo PodsForm::label( 'pods_meta_' . $field['name'], $field['label'], $field['help'], $field ); ?></th>
					<td>
						<?php
						// Remove any extra ? help icons
						if ( isset( $field['help'] ) ) {
							unset( $field['help'] );
						}
						?>
						<div class="pods-submittable-fields">
							<?php echo PodsForm::field( 'pods_meta_' . $field['name'], $value, $field['type'], $field, $pod, $id ); ?>
							<?php echo PodsForm::comment( 'pods_meta_' . $field['name'], $field['description'], $field ); ?>
						</div>
					</td>
					</tr>
					<?php
					do_action( 'pods_meta_' . __FUNCTION__ . '_' . $field['name'] . '_post', $post, $field, $pod );
				}
			}
			?>
		</table>

		<?php
		do_action( 'pods_meta_' . __FUNCTION__ . '_post', $post );

		foreach ( $hidden_fields as $hidden_field ) {
			$field_data = $hidden_field['field'];

			echo PodsForm::field( 'pods_meta_' . $field_data['name'], $hidden_field['value'], 'hidden', $field_data );
		}
		?>

		<script type="text/javascript">
			jQuery( function ( $ ) {
				$( document ).Pods( 'validate' );
				$( document ).Pods( 'submit_meta' );
				$( document ).Pods( 'dependency', true );
			} );
		</script>
		<?php
	}

	/**
	 * Handle integration with the transition_post_status hook
	 *
	 * @see wp_transition_post_status
	 *
	 * @param string  $new_status
	 * @param string  $old_status
	 * @param WP_Post $post
	 */
	public function save_post_detect_new( $new_status, $old_status, $post ) {

		if ( $post ) {
			self::$old_post_status[ $post->post_type ] = $old_status;
		}

	}

	/**
	 * Handle integration with the save_post hook
	 *
	 * @see wp_insert_post
	 *
	 * @param int       $post_id
	 * @param WP_Post   $post
	 * @param bool|null $update
	 */
	public function save_post( $post_id, $post, $update = null ) {

		if ( empty( $post ) ) {
			return;
		}

		$is_new_item = false;

		if ( is_bool( $update ) ) {
			$is_new_item = ! $update;
		} // false is new item
		elseif ( isset( self::$old_post_status[ $post->post_type ] ) && in_array( self::$old_post_status[ $post->post_type ], array(
				'new',
				'auto-draft'
			), true ) ) {

This line of the multi-line function call does not seem to be indented correctly. Expected 8 spaces, but found 12.

			$is_new_item = true;
		}

		$nonced = wp_verify_nonce( pods_v( 'pods_meta', 'post' ), 'pods_meta_post' );

		if ( ! $is_new_item && false === $nonced ) {
			return;
		}

		// Unset to avoid manual new post issues
		if ( isset( self::$old_post_status[ $post->post_type ] ) ) {
			unset( self::$old_post_status[ $post->post_type ] );
		}

		$blacklisted_types = array(
			'revision',
			'_pods_pod',
			'_pods_field'
		);

		$blacklisted_types = apply_filters( 'pods_meta_save_post_blacklist_types', $blacklisted_types, $post_id, $post );

		// @todo Figure out how to hook into autosave for saving meta

		// Block Autosave and Revisions
		if ( ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) || in_array( $post->post_type, $blacklisted_types ) ) {
			return;
		}

		// Block Quick Edits / Bulk Edits
		if ( 'edit.php' === pods_v( 'pagenow', 'global' ) && ( 'inline-save' === pods_v( 'action', 'post' ) || null !== pods_v( 'bulk_edit' ) || is_array( pods_v( 'post' ) ) ) ) {
			return;
		}

		// Block Trash
		if ( in_array( pods_v( 'action' ), array( 'untrash', 'trash' ), true ) ) {
			return;
		}

		// Block Auto-drafting and Trash (not via Admin action)
		$blacklisted_status = array(
			'auto-draft',
			'trash',
		);

		$blacklisted_status = apply_filters( 'pods_meta_save_post_blacklist_status', $blacklisted_status, $post_id, $post );

		if ( in_array( $post->post_status, $blacklisted_status ) ) {
			return;
		}

		$groups = $this->groups_get( 'post_type', $post->post_type );

		$id = $post_id;

		if ( ! is_object( self::$current_pod ) || self::$current_pod->pod !== $post->post_type ) {
			self::$current_pod = pods( $post->post_type, $id, true );
		} elseif ( is_object( self::$current_pod ) && (int) self::$current_pod->id() !== (int) $id ) {
			self::$current_pod->fetch( $id );
		}

		$pod  = self::$current_pod;
		$data = array();

		if ( $pod ) {
			$rest_enable = (boolean) pods_v( 'rest_enable', $pod->pod_data['options'], false );

			// Block REST API saves, we handle those separately in PodsRESTHandlers
			if ( defined( 'REST_REQUEST' ) && REST_REQUEST && $rest_enable ) {
				return;
			}
		}
		// The following code will run for all post_types (not just Pods)

		if ( false !== $nonced && ! empty( $groups ) ) {
			foreach ( $groups as $group ) {
				if ( empty( $group['fields'] ) ) {
					continue;
				}

				foreach ( $group['fields'] as $field ) {
					if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'], $pod, $id ) ) {
						if ( ! pods_v( 'hidden', $field['options'], false ) ) {
							continue;
						}
					}

					$data[ $field['name'] ] = '';

					if ( isset( $_POST[ 'pods_meta_' . $field['name'] ] ) ) {
						$data[ $field['name'] ] = $_POST[ 'pods_meta_' . $field['name'] ];
					}
				}
			}

			if ( $is_new_item ) {
				do_action( 'pods_meta_create_pre_post', $data, $pod, $id, $groups, $post, $post->post_type );
				do_action( "pods_meta_create_pre_post_{$post->post_type}", $data, $pod, $id, $groups, $post );
			}

			do_action( 'pods_meta_save_pre_post', $data, $pod, $id, $groups, $post, $post->post_type, $is_new_item );
			do_action( "pods_meta_save_pre_post_{$post->post_type}", $data, $pod, $id, $groups, $post, $is_new_item );
		}

		if ( $is_new_item || false !== $nonced ) {
			pods_no_conflict_on( 'post' );

			if ( ! empty( $pod ) ) {
				// Fix for Pods doing it's own sanitizing
				$data = pods_unslash( (array) $data );

				$pod->save( $data, null, null, array( 'is_new_item' => $is_new_item, 'podsmeta' => true ) );
			} elseif ( ! empty( $id ) ) {
				foreach ( $data as $field => $value ) {
					update_post_meta( $id, $field, $value );
				}
			}

			pods_no_conflict_off( 'post' );
		}

		if ( false !== $nonced && ! empty( $groups ) ) {
			if ( $is_new_item ) {
				do_action( 'pods_meta_create_post', $data, $pod, $id, $groups, $post, $post->post_type );
				do_action( "pods_meta_create_post_{$post->post_type}", $data, $pod, $id, $groups, $post );
			}

			do_action( 'pods_meta_save_post', $data, $pod, $id, $groups, $post, $post->post_type, $is_new_item );
			do_action( "pods_meta_save_post_{$post->post_type}", $data, $pod, $id, $groups, $post, $is_new_item );
		}

	}

	/**
	 * Track changed fields before save for posts.
	 *
	 * @param array $data
	 * @param array $postarr
	 *
	 * @return array
	 */
	public function save_post_track_changed_fields( $data, $postarr ) {

		$no_conflict = pods_no_conflict_check( 'post' );

		if ( ! $no_conflict && ! empty( $data['post_type'] ) && ! empty( $postarr['ID'] ) ) {
			$pod = $data['post_type'];
			$id  = $postarr['ID'];

			PodsAPI::handle_changed_fields( $pod, $id, 'reset' );
		}

		return $data;

	}

	/**
	 * @param $form_fields
	 * @param $post
	 *
	 * @return array
	 */
	public function meta_media( $form_fields, $post ) {

		$groups = $this->groups_get( 'media', 'media' );

		if ( empty( $groups ) || 'attachment' == pods_var( 'typenow', 'global' ) ) {
			return $form_fields;
		}

		wp_enqueue_style( 'pods-form' );
		wp_enqueue_script( 'pods' );

		$id = null;

		if ( is_object( $post ) ) {
			$id = $post->ID;
		}

		$pod = null;

		$meta_nonce = PodsForm::field( 'pods_meta', wp_create_nonce( 'pods_meta_media' ), 'hidden' );

		foreach ( $groups as $group ) {
			if ( empty( $group['fields'] ) ) {
				continue;
			}

			if ( null === $pod || ( is_object( $pod ) && $pod->id() != $id ) ) {
				if ( ! is_object( self::$current_pod ) || self::$current_pod->pod != $group['pod']['name'] ) {
					self::$current_pod = pods( $group['pod']['name'], $id, true );
				} elseif ( self::$current_pod->id() != $id ) {
					self::$current_pod->fetch( $id );
				}

				$pod = self::$current_pod;
			}

			foreach ( $group['fields'] as $field ) {
				if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'], $pod, $id ) ) {
					if ( ! pods_var( 'hidden', $field['options'], false ) ) {
						continue;
					}
				}

				$value = '';

				if ( ! empty( $pod ) ) {
					$value = $pod->field( array( 'name' => $field['name'], 'in_form' => true ) );
				} elseif ( ! empty( $id ) ) {
					pods_no_conflict_on( 'post' );

					$value = get_post_meta( $id, $field['name'], true );

					pods_no_conflict_off( 'post' );
				}

				// Manually force DFV initialization.  This is needed for attachments in "grid mode" in the
				// media library.  Note that this should only occur for attachment_fields_to_edit (see #4785)
				$dfv_init_script = "<script>PodsDFV.init();</script>";

The string literal <script>PodsDFV.init();</script> does not require double quotes, as per coding-style, please use single quotes.

				$form_fields[ 'pods_meta_' . $field['name'] ] = array(
					'label' => $field['label'],
					'input' => 'html',
					'html'  => PodsForm::field( 'pods_meta_' . $field['name'], $value, $field['type'], $field, $pod, $id ) . $meta_nonce . $dfv_init_script,
					'helps' => PodsForm::comment( 'pods_meta_' . $field['name'], $field['description'], $field )
				);
			}
		}

		$form_fields = apply_filters( 'pods_meta_' . __FUNCTION__, $form_fields );

		return $form_fields;
	}

	/**
	 * @param $post
	 * @param $attachment
	 *
	 * @return mixed
	 */
	public function save_media( $post, $attachment ) {

		$groups = $this->groups_get( 'media', 'media' );

		if ( empty( $groups ) ) {
			return $post;
		}

		$post_id = $attachment;

		if ( empty( $_POST ) || ! wp_verify_nonce( pods_v( 'pods_meta', 'post' ), 'pods_meta_media' ) ) {
			return $post;
		}

		if ( is_array( $post ) && ! empty( $post ) && isset( $post['ID'] ) && 'attachment' == $post['post_type'] ) {
			$post_id = $post['ID'];
		}

		if ( is_array( $post_id ) || empty( $post_id ) ) {
			return $post;
		}

		$data = array();

		$id  = $post_id;
		$pod = null;

		foreach ( $groups as $group ) {
			if ( empty( $group['fields'] ) ) {
				continue;
			}

			if ( null === $pod || ( is_object( $pod ) && $pod->id() != $id ) ) {
				if ( ! is_object( self::$current_pod ) || self::$current_pod->pod != $group['pod']['name'] ) {
					self::$current_pod = pods( $group['pod']['name'], $id, true );
				} elseif ( self::$current_pod->id() != $id ) {
					self::$current_pod->fetch( $id );
				}

				$pod = self::$current_pod;
			}

			foreach ( $group['fields'] as $field ) {

				if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'], $pod, $id ) ) {
					if ( ! pods_var( 'hidden', $field['options'], false ) ) {
						continue;
					}
				}

				$data[ $field['name'] ] = '';

				if ( isset( $_POST[ 'pods_meta_' . $field['name'] ] ) ) {
					$data[ $field['name'] ] = $_POST[ 'pods_meta_' . $field['name'] ];
				}
			}
		}

		if ( $pod ) {
			$rest_enable = (boolean) pods_v( 'rest_enable', $pod->pod_data['options'], false );

			// Block REST API saves, we handle those separately in PodsRESTHandlers
			if ( defined( 'REST_REQUEST' ) && REST_REQUEST && $rest_enable ) {
				return $post;
			}
		}

		do_action( 'pods_meta_save_pre_media', $data, $pod, $id, $groups, $post, $attachment );

		if ( ! empty( $pod ) ) {
			// Fix for Pods doing it's own sanitization
			$data = pods_unslash( (array) $data );

			$pod->save( $data, null, null, array( 'podsmeta' => true ) );
		} elseif ( ! empty( $id ) ) {
			pods_no_conflict_on( 'post' );

			foreach ( $data as $field => $value ) {
				update_post_meta( $id, $field, $value );
			}

			pods_no_conflict_off( 'post' );
		}

		do_action( 'pods_meta_save_media', $data, $pod, $id, $groups, $post, $attachment );

		return $post;
	}

	/**
	 *
	 */
	public function save_media_ajax() {

		if ( ! isset( $_POST['id'] ) || empty( $_POST['id'] ) || absint( $_POST['id'] ) < 1 ) {
			return;
		}

		$id = absint( $_POST['id'] );

		if ( ! isset( $_POST['nonce'] ) || empty( $_POST['nonce'] ) ) {
			return;
		}

		check_ajax_referer( 'update-post_' . $id, 'nonce' );

		if ( ! current_user_can( 'edit_post', $id ) ) {
			return;
		}

		$post = get_post( $id, ARRAY_A );

		if ( 'attachment' != $post['post_type'] ) {
			return;
		}

		// fix ALL THE THINGS

		if ( ! isset( $_REQUEST['attachments'] ) ) {
			$_REQUEST['attachments'] = array();
		}

		if ( ! isset( $_REQUEST['attachments'][ $id ] ) ) {
			$_REQUEST['attachments'][ $id ] = array();
		}

		if ( empty( $_REQUEST['attachments'][ $id ] ) ) {
			$_REQUEST['attachments'][ $id ]['_fix_wp'] = 1;
		}
	}

	/**
	 * @param      $tag
	 * @param null $taxonomy
	 */
	public function meta_taxonomy( $tag, $taxonomy = null ) {

		wp_enqueue_style( 'pods-form' );
		wp_enqueue_script( 'pods' );

		do_action( 'pods_meta_' . __FUNCTION__, $tag, $taxonomy );

		$taxonomy_name = $taxonomy;

		if ( ! is_object( $tag ) ) {
			$taxonomy_name = $tag;
		}

		$groups = $this->groups_get( 'taxonomy', $taxonomy_name );

		$id = null;

		if ( is_object( $tag ) ) {
			$id = $tag->term_id;
		}

		$pod = null;

		echo PodsForm::field( 'pods_meta', wp_create_nonce( 'pods_meta_taxonomy' ), 'hidden' );

		foreach ( $groups as $group ) {
			if ( empty( $group['fields'] ) ) {
				continue;
			}

			if ( null === $pod || ( is_object( $pod ) && $pod->id() != $id ) ) {
				if ( ! is_object( self::$current_pod ) || self::$current_pod->pod != $group['pod']['name'] ) {
					self::$current_pod = pods( $group['pod']['name'], $id, true );
				} elseif ( self::$current_pod->id() != $id ) {
					self::$current_pod->fetch( $id );
				}

				$pod = self::$current_pod;
			}

			foreach ( $group['fields'] as $field ) {
				if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'], $pod, $id ) ) {
					if ( pods_var( 'hidden', $field['options'], false ) ) {
						$field['type'] = 'hidden';
					} else {
						continue;
					}
				} elseif ( ! pods_has_permissions( $field['options'] ) && pods_var( 'hidden', $field['options'], false ) ) {
					$field['type'] = 'hidden';
				}

				$value = '';

				if ( ! empty( $pod ) ) {
					$value = $pod->field( array( 'name' => $field['name'], 'in_form' => true ) );
				}

				if ( ! is_object( $tag ) ) {
					?>
					<div class="form-field pods-field" style="<?php echo esc_attr( 'hidden' == $field['type'] ? 'display:none;' : '' ); ?>">
						<?php
						echo PodsForm::label( 'pods_meta_' . $field['name'], $field['label'], $field['help'], $field );
						echo PodsForm::field( 'pods_meta_' . $field['name'], $value, $field['type'], $field, $pod, $id );
						echo PodsForm::comment( 'pods_meta_' . $field['name'], $field['description'], $field );
						?>
					</div>
					<?php
				} else {
					?>
					<tr class="form-field pods-field <?php echo esc_attr( 'pods-form-ui-row-type-' . $field['type'] . ' pods-form-ui-row-name-' . PodsForm::clean( $field['name'], true ) ); ?>" style="<?php echo esc_attr( 'hidden' == $field['type'] ? 'display:none;' : '' ); ?>">
						<th scope="row" valign="top"><?php echo PodsForm::label( 'pods_meta_' . $field['name'], $field['label'], $field['help'], $field ); ?></th>
						<td>
							<?php
							echo PodsForm::field( 'pods_meta_' . $field['name'], $value, $field['type'], $field, $pod, $id );
							echo PodsForm::comment( 'pods_meta_' . $field['name'], $field['description'], $field );
							?>
						</td>
					</tr>
					<?php
				}
			}
		}

		do_action( 'pods_meta_' . __FUNCTION__ . '_post', $tag, $taxonomy );
	}

	/**
	 * @param $term_id
	 * @param $term_taxonomy_id
	 * @param $taxonomy
	 */
	public function save_taxonomy( $term_id, $term_taxonomy_id, $taxonomy ) {

The return type could not be reliably inferred; please add a @return annotation.

		$is_new_item = false;

		if ( 'create_term' == current_filter() ) {
			$is_new_item = true;
		}

		if ( empty( $_POST ) || ! wp_verify_nonce( pods_v( 'pods_meta', 'post' ), 'pods_meta_taxonomy' ) ) {
			return $term_id;
		}

		// Block Quick Edits / Bulk Edits
		if ( 'inline-save-tax' == pods_var( 'action', 'post' ) || null != pods_var( 'delete_tags', 'post' ) ) {
			return $term_id;
		}

		$groups = $this->groups_get( 'taxonomy', $taxonomy );

		if ( empty( $groups ) ) {
			return $term_id;
		}

		$term = null;

		$id  = $term_id;
		$pod = null;

		$has_fields = false;

		foreach ( $groups as $group ) {
			if ( empty( $group['fields'] ) ) {
				continue;
			}

			if ( null === $term ) {
				$term = get_term( $term_id, $taxonomy );

				$data = array(
					'name' => $term->name
				);
			}

			$has_fields = true;

			if ( null === $pod || ( is_object( $pod ) && $pod->id() != $id ) ) {
				if ( ! is_object( self::$current_pod ) || self::$current_pod->pod != $group['pod']['name'] ) {
					self::$current_pod = pods( $group['pod']['name'], $id, true );
				} elseif ( self::$current_pod->id() != $id ) {
					self::$current_pod->fetch( $id );
				}

				$pod = self::$current_pod;
			}

			foreach ( $group['fields'] as $field ) {
				if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'], $pod, $id ) ) {
					if ( ! pods_var( 'hidden', $field['options'], false ) ) {
						continue;
					}
				}

				$data[ $field['name'] ] = '';

The variable $data does not seem to be defined for all execution paths leading up to this point.

				if ( isset( $_POST[ 'pods_meta_' . $field['name'] ] ) ) {
					$data[ $field['name'] ] = $_POST[ 'pods_meta_' . $field['name'] ];
				}
			}
		}

		if ( $pod ) {
			$rest_enable = (boolean) pods_v( 'rest_enable', $pod->pod_data['options'], false );

			// Block REST API saves, we handle those separately in PodsRESTHandlers
			if ( defined( 'REST_REQUEST' ) && REST_REQUEST && $rest_enable ) {
				return $term_id;
			}
		}

		if ( ! $has_fields ) {
			return $term_id;
		}

		if ( $is_new_item ) {
			do_action( 'pods_meta_create_pre_taxonomy', $data, $pod, $id, $groups, $term_id, $term_taxonomy_id, $taxonomy );
			do_action( "pods_meta_create_pre_taxonomy_{$taxonomy}", $data, $pod, $id, $groups, $term_id, $term_taxonomy_id, $taxonomy );
		}

		do_action( 'pods_meta_save_pre_taxonomy', $data, $pod, $id, $groups, $term_id, $term_taxonomy_id, $taxonomy, $is_new_item );
		do_action( "pods_meta_save_pre_taxonomy_{$taxonomy}", $data, $pod, $id, $groups, $term_id, $term_taxonomy_id, $taxonomy, $is_new_item );

		pods_no_conflict_on( 'taxonomy' );

		if ( ! empty( $pod ) ) {
			// Fix for Pods doing it's own sanitization
			$data = pods_unslash( (array) $data );

			$pod->save( $data, null, null, array( 'is_new_item' => $is_new_item, 'podsmeta' => true ) );
		}

		pods_no_conflict_off( 'taxonomy' );

		if ( $is_new_item ) {
			do_action( 'pods_meta_create_taxonomy', $data, $pod, $id, $groups, $term_id, $term_taxonomy_id, $taxonomy );
			do_action( "pods_meta_create_taxonomy_{$taxonomy}", $data, $pod, $id, $groups, $term_id, $term_taxonomy_id, $taxonomy );
		}

		do_action( 'pods_meta_save_taxonomy', $data, $pod, $id, $groups, $term_id, $term_taxonomy_id, $taxonomy, $is_new_item );
		do_action( "pods_meta_save_taxonomy_{$taxonomy}", $data, $pod, $id, $groups, $term_id, $term_taxonomy_id, $taxonomy, $is_new_item );

		return $term_id;
	}

	/**
	 * Track changed fields before save for terms.
	 *
	 * @param int    $term_id
	 * @param string $taxonomy
	 */
	public function save_taxonomy_track_changed_fields( $term_id, $taxonomy ) {

		$no_conflict = pods_no_conflict_check( 'term' );

		if ( ! $no_conflict ) {
			$pod = $taxonomy;
			$id  = $term_id;

			PodsAPI::handle_changed_fields( $pod, $id, 'reset' );
		}

	}

	/**
	 * @param $user_id
	 */
	public function meta_user( $user_id ) {

		wp_enqueue_style( 'pods-form' );
		wp_enqueue_script( 'pods' );

		do_action( 'pods_meta_' . __FUNCTION__, $user_id );

		$groups = $this->groups_get( 'user', 'user' );

		if ( is_object( $user_id ) ) {
			$user_id = $user_id->ID;
		}

		$id  = $user_id;
		$pod = null;

		foreach ( $groups as $group ) {
			if ( empty( $group['fields'] ) ) {
				continue;
			}

			if ( null === $pod || ( is_object( $pod ) && $pod->id() != $id ) ) {
				if ( ! is_object( self::$current_pod ) || self::$current_pod->pod != $group['pod']['name'] ) {
					self::$current_pod = pods( $group['pod']['name'], $id, true );
				} elseif ( self::$current_pod->id() != $id ) {
					self::$current_pod->fetch( $id );
				}

				$pod = self::$current_pod;
			}

			$hidden_fields = array();
			?>
			<h3><?php echo $group['label']; ?></h3>

			<?php echo PodsForm::field( 'pods_meta', wp_create_nonce( 'pods_meta_user' ), 'hidden' ); ?>

			<table class="form-table pods-meta">
				<tbody>
				<?php
				foreach ( $group['fields'] as $field ) {

					if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'], $pod, $id ) ) {
						if ( pods_var( 'hidden', $field['options'], false ) ) {
							$field['type'] = 'hidden';
						} else {
							continue;
						}
					} elseif ( ! pods_has_permissions( $field['options'] ) && pods_var( 'hidden', $field['options'], false ) ) {
						$field['type'] = 'hidden';
					}

					$value = '';

					if ( ! empty( $pod ) ) {
						$value = $pod->field( array( 'name' => $field['name'], 'in_form' => true ) );
					} elseif ( ! empty( $id ) ) {
						pods_no_conflict_on( 'user' );

						$value = get_user_meta( $id, $field['name'], true );

get_user_meta() usage is highly discouraged, check VIP documentation on "Working with wp_users"

						pods_no_conflict_off( 'user' );
					}

					if ( 'hidden' == $field['type'] ) {
						$hidden_fields[] = array(
							'field' => $field,
							'value' => $value
						);
					} else {
						?>
						<tr class="form-field pods-field <?php echo esc_attr( 'pods-form-ui-row-type-' . $field['type'] . ' pods-form-ui-row-name-' . PodsForm::clean( $field['name'], true ) ); ?>">
							<th scope="row" valign="top"><?php echo PodsForm::label( 'pods_meta_' . $field['name'], $field['label'], $field['help'], $field ); ?></th>
							<td>
								<?php echo PodsForm::field( 'pods_meta_' . $field['name'], $value, $field['type'], $field, $pod, $id ); ?>
								<?php echo PodsForm::comment( 'pods_meta_' . $field['name'], $field['description'], $field ); ?>
							</td>
						</tr>
						<?php
					}
				}
				?>
				</tbody>
			</table>
			<?php
			foreach ( $hidden_fields as $hidden_field ) {
				$field_data = $hidden_field['field'];

				echo PodsForm::field( 'pods_meta_' . $field_data['name'], $hidden_field['value'], 'hidden', $field_data );
			}
		}

		do_action( 'pods_meta_' . __FUNCTION__ . '_post', $user_id );
	}

	/**
	 * Handle integration with the user_register and profile_update hooks.
	 *
	 * @see wp_insert_user
	 *
	 * @param int         $user_id       User ID.
	 * @param object|null $old_user_data Object containing user's data prior to update.
	 */
	public function save_user( $user_id, $old_user_data = null ) {

		$is_new_item = false;

		if ( 'user_register' == current_filter() ) {
			$is_new_item = true;
		}

		$nonced = wp_verify_nonce( pods_v( 'pods_meta', 'post' ), 'pods_meta_user' );

		if ( ! $is_new_item && false === $nonced ) {
			return;
		}

		if ( is_object( $user_id ) ) {
			$user_id = $user_id->ID;
		}

		$groups = $this->groups_get( 'user', 'user' );

		$id = $user_id;

		if ( ! is_object( self::$current_pod ) || self::$current_pod->pod !== 'user' ) {

Found "!== '". Use Yoda Condition checks, you must

			self::$current_pod = pods( 'user', $id, true );
		} elseif ( is_object( self::$current_pod ) && (int) self::$current_pod->id() !== (int) $id ) {
			self::$current_pod->fetch( $id );
		}

		$pod  = self::$current_pod;
		$data = array();

		if ( $pod ) {
			$rest_enable = (boolean) pods_v( 'rest_enable', $pod->pod_data['options'], false );

			// Block REST API saves, we handle those separately in PodsRESTHandlers
			if ( defined( 'REST_REQUEST' ) && REST_REQUEST && $rest_enable ) {
				return;
			}
		}

		if ( false !== $nonced && ! empty( $groups ) ) {
			foreach ( $groups as $group ) {
				if ( empty( $group['fields'] ) ) {
					continue;
				}

				foreach ( $group['fields'] as $field ) {
					if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'], $pod, $id ) ) {
						if ( ! pods_v( 'hidden', $field['options'], false ) ) {
							continue;
						}
					}

					$data[ $field['name'] ] = '';

					if ( isset( $_POST[ 'pods_meta_' . $field['name'] ] ) ) {
						$data[ $field['name'] ] = $_POST[ 'pods_meta_' . $field['name'] ];
					}
				}
			}

			if ( $is_new_item ) {
				do_action( 'pods_meta_create_pre_user', $data, $pod, $id, $groups );
			}

			do_action( 'pods_meta_save_pre_user', $data, $pod, $id, $groups, $is_new_item );
		}

		if ( $is_new_item || false !== $nonced ) {
			pods_no_conflict_on( 'user' );

			if ( ! empty( $pod ) ) {
				// Fix for Pods doing it's own sanitizing
				$data = pods_unslash( (array) $data );

				$pod->save( $data, null, null, array( 'is_new_item' => $is_new_item, 'podsmeta' => true ) );
			} elseif ( ! empty( $id ) ) {
				foreach ( $data as $field => $value ) {
					update_user_meta( $id, $field, $value );

update_user_meta() usage is highly discouraged, check VIP documentation on "Working with wp_users"

				}
			}

			pods_no_conflict_off( 'user' );
		}

		if ( false !== $nonced && ! empty( $groups ) ) {
			if ( $is_new_item ) {
				do_action( 'pods_meta_create_user', $data, $pod, $id, $groups );
			}

			do_action( 'pods_meta_save_user', $data, $pod, $id, $groups, $is_new_item );
		}

	}

	/**
	 * Track changed fields before save for users.
	 *
	 * @param string $user_login
	 *
	 * @return string
	 */
	public function save_user_track_changed_fields( $user_login ) {

		$no_conflict = pods_no_conflict_check( 'user' );

		if ( ! $no_conflict ) {
			$user = get_user_by( 'login', $user_login );

			if ( $user && ! is_wp_error( $user ) ) {
				$pod = 'user';
				$id  = $user->ID;

				PodsAPI::handle_changed_fields( $pod, $id, 'reset' );
			}
		}

		return $user_login;

	}

	/**
	 * @param $commenter
	 * @param $user_identity
	 */
	public function meta_comment_new_logged_in( $commenter, $user_identity ) {

		wp_enqueue_style( 'pods-form' );
		wp_enqueue_script( 'pods' );

		do_action( 'pods_meta_' . __FUNCTION__, $commenter, $user_identity );

		$groups = $this->groups_get( 'comment', 'comment' );

		$id  = null;
		$pod = null;

		echo PodsForm::field( 'pods_meta', wp_create_nonce( 'pods_meta_comment' ), 'hidden' );

		foreach ( $groups as $group ) {
			if ( empty( $group['fields'] ) ) {
				continue;
			}

			if ( null === $pod || ( is_object( $pod ) && $pod->id() != $id ) ) {
				if ( ! is_object( self::$current_pod ) || self::$current_pod->pod != $group['pod']['name'] ) {
					self::$current_pod = pods( $group['pod']['name'], $id, true );
				} elseif ( self::$current_pod->id() != $id ) {
					self::$current_pod->fetch( $id );
				}

				$pod = self::$current_pod;
			}

			foreach ( $group['fields'] as $field ) {
				if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'], $pod, $id ) ) {
					if ( pods_var( 'hidden', $field['options'], false ) ) {
						$field['type'] = 'hidden';
					} else {
						continue;
					}
				} elseif ( ! pods_has_permissions( $field['options'] ) && pods_var( 'hidden', $field['options'], false ) ) {
					$field['type'] = 'hidden';
				}

				$value = '';

				if ( ! empty( $pod ) ) {
					$value = $pod->field( array( 'name' => $field['name'], 'in_form' => true ) );
				} elseif ( ! empty( $id ) ) {
					pods_no_conflict_on( 'comment' );

					$value = get_comment_meta( $id, $field['name'], true );

					pods_no_conflict_off( 'comment' );
				}
				?>
				<p class="comment-form-author comment-form-pods-meta-<?php echo esc_attr( $field['name'] ); ?>  pods-field" style="<?php echo esc_attr( 'hidden' == $field['type'] ? 'display:none;' : '' ); ?>">
					<?php
					echo PodsForm::label( 'pods_meta_' . $field['name'], $field['label'], $field['help'], $field );
					echo PodsForm::field( 'pods_meta_' . $field['name'], $value, $field['type'], $field, $pod, $id );
					echo PodsForm::comment( 'pods_meta_' . $field['name'], $field['description'], $field );
					?>
				</p>
				<?php
			}
		}

		do_action( 'pods_meta_' . __FUNCTION__ . '_post', $commenter, $user_identity );
	}

	/**
	 * @param $form_fields
	 *
	 * @return array
	 */
	public function meta_comment_new( $form_fields ) {

		wp_enqueue_style( 'pods-form' );
		wp_enqueue_script( 'pods' );

		$groups = $this->groups_get( 'comment', 'comment' );

		$id  = null;
		$pod = null;

		$form_fields['pods_meta'] = PodsForm::field( 'pods_meta', wp_create_nonce( 'pods_meta_comment' ), 'hidden' );

		foreach ( $groups as $group ) {
			if ( empty( $group['fields'] ) ) {
				continue;
			}

			if ( null === $pod || ( is_object( $pod ) && $pod->id() != $id ) ) {
				if ( ! is_object( self::$current_pod ) || self::$current_pod->pod != $group['pod']['name'] ) {
					self::$current_pod = pods( $group['pod']['name'], $id, true );
				} elseif ( self::$current_pod->id() != $id ) {
					self::$current_pod->fetch( $id );
				}

				$pod = self::$current_pod;
			}

			foreach ( $group['fields'] as $field ) {

				if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'], $pod, $id ) ) {
					if ( pods_var( 'hidden', $field['options'], false ) ) {
						$field['type'] = 'hidden';
					} else {
						continue;
					}
				} elseif ( ! pods_has_permissions( $field['options'] ) && pods_var( 'hidden', $field['options'], false ) ) {
					$field['type'] = 'hidden';
				}

				$value = '';

				if ( ! empty( $pod ) ) {
					$value = $pod->field( array( 'name' => $field['name'], 'in_form' => true ) );
				} elseif ( ! empty( $id ) ) {
					pods_no_conflict_on( 'comment' );

					$value = get_comment_meta( $id, $field['name'], true );

					pods_no_conflict_off( 'comment' );
				}

				ob_start();
				?>
				<p class="comment-form-author comment-form-pods-meta-<?php echo esc_attr( $field['name'] ); ?> pods-field" style="<?php echo esc_attr( 'hidden' == $field['type'] ? 'display:none;' : '' ); ?>">
					<?php
					echo PodsForm::label( 'pods_meta_' . $field['name'], $field['label'], $field['help'], $field );
					echo PodsForm::field( 'pods_meta_' . $field['name'], $value, $field['type'], $field, $pod, $id );
					echo PodsForm::comment( 'pods_meta_' . $field['name'], $field['description'], $field );
					?>
				</p>
				<?php
				$form_fields[ 'pods_meta_' . $field['name'] ] = ob_get_clean();
			}
		}

		$form_fields = apply_filters( 'pods_meta_' . __FUNCTION__, $form_fields );

		return $form_fields;
	}

	/**
	 * @param      $comment_type
	 * @param null $comment
	 */
	public function meta_comment_add( $comment_type, $comment = null ) {

		if ( is_object( $comment ) && isset( $comment_type->comment_type ) ) {
			$comment_type = $comment->comment_type;
		}

		if ( is_object( $comment_type ) && isset( $comment_type->comment_type ) ) {
			$comment      = $comment_type;
			$comment_type = $comment_type->comment_type;
		}

		if ( is_object( $comment_type ) ) {
			return;
		} elseif ( empty( $comment_type ) ) {
			$comment_type = 'comment';
		}

		$groups = $this->groups_get( 'comment', $comment_type );

		foreach ( $groups as $group ) {
			if ( empty( $group['fields'] ) ) {
				continue;
			}

			$field_found = false;

			foreach ( $group['fields'] as $field ) {
				if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'], null, null ) ) {
					if ( pods_var( 'hidden', $field['options'], false ) ) {
						$field_found = true;
						break;
					} else {
						continue;
					}
				} else {
					$field_found = true;
					break;
				}
			}

			if ( $field_found ) {
				add_meta_box( 'pods-meta-' . sanitize_title( $group['label'] ), $group['label'], array(
						$this,
						'meta_comment'
					), $comment_type, $group['context'], $group['priority'], array( 'group' => $group ) );

This line of the multi-line function call does not seem to be indented correctly. Expected 16 spaces, but found 20.

			}
		}
	}

	/**
	 * @param $comment
	 * @param $metabox
	 */
	public function meta_comment( $comment, $metabox ) {

		wp_enqueue_style( 'pods-form' );
		wp_enqueue_script( 'pods' );

		do_action( 'pods_meta_' . __FUNCTION__, $comment, $metabox );

		$hidden_fields = array();

		echo PodsForm::field( 'pods_meta', wp_create_nonce( 'pods_meta_comment' ), 'hidden' );
		?>
		<table class="form-table editcomment pods-metabox">
			<?php
			$id = null;

			if ( is_object( $comment ) ) {
				$id = $comment->comment_ID;
			}

			if ( ! is_object( self::$current_pod ) || self::$current_pod->pod != $metabox['args']['group']['pod']['name'] ) {
				self::$current_pod = pods( $metabox['args']['group']['pod']['name'], $id, true );
			} elseif ( self::$current_pod->id() != $id ) {
				self::$current_pod->fetch( $id );
			}

			$pod = self::$current_pod;

			foreach ( $metabox['args']['group']['fields'] as $field ) {
				if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $metabox['args']['group']['fields'], $pod, $id ) ) {
					if ( pods_var( 'hidden', $field['options'], false ) ) {
						$field['type'] = 'hidden';
					} else {
						continue;
					}
				} elseif ( ! pods_has_permissions( $field['options'] ) && pods_var( 'hidden', $field['options'], false ) ) {
					$field['type'] = 'hidden';
				}

				$value = '';

				if ( ! empty( $pod ) ) {
					$value = $pod->field( array( 'name' => $field['name'], 'in_form' => true ) );
				}

				if ( 'hidden' == $field['type'] ) {
					$hidden_fields[] = array(
						'field' => $field,
						'value' => $value
					);
				} else {
					?>
					<tr class="form-field pods-field <?php echo esc_attr( 'pods-form-ui-row-type-' . $field['type'] . ' pods-form-ui-row-name-' . PodsForm::clean( $field['name'], true ) ); ?>">
						<th scope="row" valign="top"><?php echo PodsForm::label( 'pods_meta_' . $field['name'], $field['label'], $field['help'], $field ); ?></th>
						<td>
							<?php echo PodsForm::field( 'pods_meta_' . $field['name'], $value, $field['type'], $field, $pod, $id ); ?>
							<?php echo PodsForm::comment( 'pods_meta_' . $field['name'], $field['description'], $field ); ?>
						</td>
					</tr>
					<?php
				}
			}
			?>
		</table>
		<?php
		foreach ( $hidden_fields as $hidden_field ) {
			$field_data = $hidden_field['field'];

			echo PodsForm::field( 'pods_meta_' . $field_data['name'], $hidden_field['value'], 'hidden', $field_data );
		}

		do_action( 'pods_meta_' . __FUNCTION__ . '_post', $comment, $metabox );
	}

	/**
	 * @param $approved
	 * @param $commentdata
	 */
	public function validate_comment( $approved, $commentdata ) {

		$groups = $this->groups_get( 'comment', 'comment' );

		if ( empty( $groups ) ) {
			return $approved;
		}

		$data = array();

		$pod = null;
		$id  = null;

		foreach ( $groups as $group ) {
			if ( empty( $group['fields'] ) ) {
				continue;
			}

			if ( null === $pod || ( is_object( $pod ) && $pod->id() != $id ) ) {
				if ( ! is_object( self::$current_pod ) || self::$current_pod->pod != $group['pod']['name'] ) {
					self::$current_pod = pods( $group['pod']['name'], $id, true );
				} elseif ( self::$current_pod->id() != $id ) {
					self::$current_pod->fetch( $id );
				}

				$pod = self::$current_pod;
			}

			foreach ( $group['fields'] as $field ) {

				if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'], $pod, $id ) ) {
					if ( ! pods_var( 'hidden', $field['options'], false ) ) {
						continue;
					}
				}

				$data[ $field['name'] ] = '';

				if ( isset( $_POST[ 'pods_meta_' . $field['name'] ] ) ) {
					$data[ $field['name'] ] = $_POST[ 'pods_meta_' . $field['name'] ];
				}

				$validate = pods_api()->handle_field_validation( $data[ $field['name'] ], $field['name'], pods_api()->get_wp_object_fields( 'comment' ), $pod->fields(), $pod, array() );

				if ( false === $validate ) {
					$validate = sprintf( __( 'There was an issue validating the field %s', 'pods' ), $field['label'] );
				}

				if ( ! is_bool( $validate ) && ! empty( $validate ) ) {
					return pods_error( $validate, $this );
				}
			}
		}

		return $approved;
	}

	/**
	 * @param $comment_id
	 */
	public function save_comment( $comment_id ) {

The return type could not be reliably inferred; please add a @return annotation.

		$groups = $this->groups_get( 'comment', 'comment' );

		if ( empty( $groups ) ) {
			return $comment_id;
		} elseif ( empty( $_POST ) ) {
			return $comment_id;
		} elseif ( ! wp_verify_nonce( pods_v( 'pods_meta', 'post' ), 'pods_meta_comment' ) ) {
			return $comment_id;
		}

		$data = array();

		$id  = $comment_id;
		$pod = null;

		foreach ( $groups as $group ) {
			if ( empty( $group['fields'] ) ) {
				continue;
			}

			if ( null === $pod || ( is_object( $pod ) && $pod->id() != $id ) ) {
				if ( ! is_object( self::$current_pod ) || self::$current_pod->pod != $group['pod']['name'] ) {
					self::$current_pod = pods( $group['pod']['name'], $id, true );
				} elseif ( self::$current_pod->id() != $id ) {
					self::$current_pod->fetch( $id );
				}

				$pod = self::$current_pod;
			}

			foreach ( $group['fields'] as $field ) {
				if ( false === PodsForm::permission( $field['type'], $field['name'], $field, $group['fields'], $pod, $id ) ) {
					if ( ! pods_var( 'hidden', $field['options'], false ) ) {
						continue;
					}
				}

				$data[ $field['name'] ] = '';

				if ( isset( $_POST[ 'pods_meta_' . $field['name'] ] ) ) {
					$data[ $field['name'] ] = $_POST[ 'pods_meta_' . $field['name'] ];
				}
			}
		}

		if ( $pod ) {
			$rest_enable = (boolean) pods_v( 'rest_enable', $pod->pod_data['options'], false );

			// Block REST API saves, we handle those separately in PodsRESTHandlers
			if ( defined( 'REST_REQUEST' ) && REST_REQUEST && $rest_enable ) {
				return $comment_id;
			}
		}

		do_action( 'pods_meta_save_pre_comment', $data, $pod, $id, $groups );

		if ( ! empty( $pod ) ) {
			// Fix for Pods doing it's own sanitization
			$data = pods_unslash( (array) $data );

			$pod->save( $data, null, null, array( 'podsmeta' => true ) );
		} elseif ( ! empty( $id ) ) {
			pods_no_conflict_on( 'comment' );

			foreach ( $data as $field => $value ) {
				update_comment_meta( $id, $field, $value );
			}

			pods_no_conflict_off( 'comment' );
		}

		do_action( 'pods_meta_save_comment', $data, $pod, $id, $groups );

		return $comment_id;
	}

	/**
	 * Track changed fields before save for comments.
	 *
	 * @param array $data       The new, processed comment data.
	 * @param array $comment    The old, unslashed comment data.
	 * @param array $commentarr The new, raw comment data.
	 *
	 * @return array
	 */
	public function save_comment_track_changed_fields( $data, $comment, $commentarr ) {

		$no_conflict = pods_no_conflict_check( 'user' );

		if ( ! $no_conflict && ! empty( $comment['comment_type'] ) && ! empty( $comment['comment_ID'] ) ) {
			$pod = $comment['comment_type'];
			$id  = $comment['comment_ID'];

			PodsAPI::handle_changed_fields( $pod, $id, 'reset' );
		}

		return $data;

	}

	/**
	 * All *_*_meta filter handler aliases
	 *
	 * @return mixed
	 */
	public function get_post_meta() {

		$args = func_get_args();

		array_unshift( $args, 'post_type' );

		$_null = apply_filters( 'pods_meta_get_post_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'get_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function get_user_meta() {

		$args = func_get_args();

		array_unshift( $args, 'user' );

		$_null = apply_filters( 'pods_meta_get_user_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'get_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function get_comment_meta() {

		$args = func_get_args();

		array_unshift( $args, 'comment' );

		$_null = apply_filters( 'pods_meta_get_comment_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'get_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function get_term_meta() {

		$args = func_get_args();

		array_unshift( $args, 'term' );

		$_null = apply_filters( 'pods_meta_get_term_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'get_meta' ), $args );
	}

	/**
	 * All *_*_meta filter handler aliases
	 *
	 * @return mixed
	 */
	public function get_option() {

		$args = func_get_args();

		array_unshift( $args, 'settings' );

		$_null = apply_filters( 'pods_meta_get_option', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'get_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function add_post_meta() {

		$args = func_get_args();

		array_unshift( $args, 'post_type' );

		$_null = apply_filters( 'pods_meta_add_post_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'add_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function add_user_meta() {

		$args = func_get_args();

		array_unshift( $args, 'user' );

		$_null = apply_filters( 'pods_meta_add_user_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'add_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function add_comment_meta() {

		$args = func_get_args();

		array_unshift( $args, 'comment' );

		$_null = apply_filters( 'pods_meta_add_comment_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'add_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function add_term_meta() {

		$args = func_get_args();

		array_unshift( $args, 'term' );

		$_null = apply_filters( 'pods_meta_add_term_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'add_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function add_option() {

		$args = func_get_args();

		array_unshift( $args, 'settings' );

		$_null = apply_filters( 'pods_meta_add_option', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'add_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function update_post_meta() {

		$args = func_get_args();

		array_unshift( $args, 'post_type' );

		$_null = apply_filters( 'pods_meta_update_post_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'update_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function update_user_meta() {

		$args = func_get_args();

		array_unshift( $args, 'user' );

		$_null = apply_filters( 'pods_meta_update_user_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'update_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function update_comment_meta() {

		$args = func_get_args();

		array_unshift( $args, 'comment' );

		$_null = apply_filters( 'pods_meta_update_comment_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'update_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function update_term_meta() {

		$args = func_get_args();

		array_unshift( $args, 'term' );

		$_null = apply_filters( 'pods_meta_update_term_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'update_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function update_option() {

		$args = func_get_args();

		array_unshift( $args, 'settings' );

		$_null = apply_filters( 'pods_meta_update_option', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'update_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function delete_post_meta() {

		$args = func_get_args();

		array_unshift( $args, 'post_type' );

		$_null = apply_filters( 'pods_meta_delete_post_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'delete_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function delete_user_meta() {

		$args = func_get_args();

		array_unshift( $args, 'user' );

		$_null = apply_filters( 'pods_meta_delete_user_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'delete_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function delete_comment_meta() {

		$args = func_get_args();

		array_unshift( $args, 'comment' );

		$_null = apply_filters( 'pods_meta_delete_comment_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'delete_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function delete_term_meta() {

		$args = func_get_args();

		array_unshift( $args, 'term' );

		$_null = apply_filters( 'pods_meta_delete_term_meta', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'delete_meta' ), $args );
	}

	/**
	 * @return mixed
	 */
	public function delete_option() {

		$args = func_get_args();

		array_unshift( $args, 'settings' );

		$_null = apply_filters( 'pods_meta_delete_option', null, $args );

		if ( null !== $_null ) {
			return $_null;
		}

		return call_user_func_array( array( $this, 'delete_meta' ), $args );
	}

	/*
     * The real meta functions
     */
	/**
	 * @param        $object_type
	 * @param        $object_id
	 * @param string $aux
	 *
	 * @return bool|mixed
	 */
	public function get_object( $object_type, $object_id, $aux = '' ) {

		global $wpdb;

Use of global functionality is not recommended; it makes your code harder to test, and less reusable.

		if ( 'term' == $object_type ) {
			$object_type = 'taxonomy';
		}

		if ( 'post_type' == $object_type ) {
			$objects = self::$post_types;
		} elseif ( 'taxonomy' == $object_type ) {
			$objects = self::$taxonomies;
		} elseif ( 'media' == $object_type ) {
			$objects = self::$media;
		} elseif ( 'user' == $object_type ) {
			$objects = self::$user;
		} elseif ( 'comment' == $object_type ) {
			$objects = self::$comment;
		} elseif ( 'settings' == $object_type ) {
			$objects = self::$settings;
		} else {
			return false;
		}

		if ( empty( $objects ) || ! is_array( $objects ) ) {
			return false;
		}

		$object_name = null;

		if ( 'media' == $object_type ) {
			return @current( $objects );

Silencing errors is discouraged

		} elseif ( 'user' == $object_type ) {
			return @current( $objects );

Silencing errors is discouraged

		} elseif ( 'comment' == $object_type ) {
			return @current( $objects );

Silencing errors is discouraged

		} elseif ( 'post_type' == $object_type ) {
			$object = get_post( $object_id );

			if ( ! is_object( $object ) || ! isset( $object->post_type ) ) {
				return false;
			}

			$object_name = $object->post_type;
		} elseif ( 'taxonomy' == $object_type ) {
			$object = get_term( $object_id );

			if ( ! is_object( $object ) || ! isset( $object->taxonomy ) ) {
				return false;
			}

			$object_name = $object->taxonomy;
			if ( empty( $aux ) ) {
				$object_name = $wpdb->get_var( $wpdb->prepare( "SELECT `taxonomy` FROM `{$wpdb->term_taxonomy}` WHERE `term_id` = %d", $object_id ) );

Usage of a direct database call is discouraged.

Usage of a direct database call without caching is prohibited. Use wp_cache_get / wp_cache_set.

			} else {
				$object_name = $aux;
			}
		} elseif ( 'settings' == $object_type ) {
			$object = $object_id;
		} else {
			return false;
		}

		$reserved_post_types = array(
			'revision'
		);

		$reserved_post_types = apply_filters( 'pods_meta_reserved_post_types', $reserved_post_types, $object_type, $object_id, $object_name, $objects );

		if ( empty( $object_name ) || ( 'post_type' == $object_type && ( 0 === strpos( $object_name, '_pods_' ) ) || in_array( $object_name, $reserved_post_types ) ) ) {
			return false;
		} elseif ( 'attachment' == $object_name ) {
			return @current( self::$media );

Silencing errors is discouraged

		}

		$recheck = array();

		// Return first created by Pods, save extended for later
		foreach ( $objects as $pod ) {
			if ( $object_name == $pod['object'] ) {
				$recheck[] = $pod;
			}

			if ( '' == $pod['object'] && $object_name == $pod['name'] ) {
				return $pod;
			}
		}

		// If no objects created by Pods, return first extended
		foreach ( $recheck as $pod ) {
			return $pod;
		}

		return false;
	}

	/**
	 * @param        $object_type
	 * @param null   $_null
	 * @param int    $object_id
	 * @param string $meta_key
	 * @param bool   $single
	 *
	 * @return array|bool|int|mixed|null|string|void

Consider making the return type a bit more specific; maybe use null|array|string.

	 */
	public function get_meta( $object_type, $_null = null, $object_id = 0, $meta_key = '', $single = false ) {

		// Enforce boolean as it can be a string sometimes
		$single = filter_var( $single, FILTER_VALIDATE_BOOLEAN );

		$meta_type = $object_type;

		if ( in_array( $meta_type, array( 'post_type', 'media' ) ) ) {
			$meta_type = 'post';
		} elseif ( 'taxonomy' == $meta_type ) {
			$meta_type = 'term';
		}

		if ( empty( $meta_key ) ) {
			if ( ! defined( 'PODS_ALLOW_FULL_META' ) || ! PODS_ALLOW_FULL_META ) {
				return $_null; // don't cover get_post_meta( $id )
			}

			$single = false;
		}

		if ( 'user' === $object_type && 'locale' === $meta_key ) {
			return $_null; // don't interfere with locale
		}

		$object = $this->get_object( $object_type, $object_id );

		if ( empty( $object_id ) || empty( $object ) ) {
			return $_null;
		}

		$no_conflict = pods_no_conflict_check( $meta_type );

		if ( ! $no_conflict ) {
			pods_no_conflict_on( $meta_type );
		}

		$meta_cache = array();

		if ( ! $single && isset( $GLOBALS['wp_object_cache'] ) && is_object( $GLOBALS['wp_object_cache'] ) ) {
			$meta_cache = wp_cache_get( $object_id, 'pods_' . $meta_type . '_meta' );

			if ( empty( $meta_cache ) ) {
				$meta_cache = wp_cache_get( $object_id, $meta_type . '_meta' );

				if ( empty( $meta_cache ) ) {
					$meta_cache = update_meta_cache( $meta_type, array( $object_id ) );
					$meta_cache = $meta_cache[ $object_id ];
				}
			}
		}

		if ( empty( $meta_cache ) || ! is_array( $meta_cache ) ) {
			$meta_cache = array();
		}

		if ( ! is_object( self::$current_field_pod ) || self::$current_field_pod->pod != $object['name'] ) {
			self::$current_field_pod = pods( $object['name'], $object_id );
		} elseif ( self::$current_field_pod->id() != $object_id ) {
			self::$current_field_pod->fetch( $object_id );
		}

		$pod = self::$current_field_pod;

		$meta_keys = array( $meta_key );

		if ( empty( $meta_key ) ) {
			$meta_keys = array_keys( $meta_cache );
		}

		$key_found = false;

		foreach ( $meta_keys as $meta_k ) {
			if ( ! empty( $pod ) ) {
				if ( isset( $pod->fields[ $meta_k ] ) ) {
					$key_found = true;

					$meta_cache[ $meta_k ] = $pod->field( array(
						'name'     => $meta_k,
						'single'   => $single,
						'get_meta' => true
					) );

					if ( ( ! is_array( $meta_cache[ $meta_k ] ) || ! isset( $meta_cache[ $meta_k ][0] ) ) ) {
						if ( empty( $meta_cache[ $meta_k ] ) && ! is_array( $meta_cache[ $meta_k ] ) && $single ) {
							$meta_cache[ $meta_k ] = array();
						} else {
							$meta_cache[ $meta_k ] = array( $meta_cache[ $meta_k ] );
						}
					}

					if ( in_array( $pod->fields[ $meta_k ]['type'], PodsForm::tableless_field_types() ) && isset( $meta_cache[ '_pods_' . $meta_k ] ) ) {
						unset( $meta_cache[ '_pods_' . $meta_k ] );
					}
				} elseif ( false !== strpos( $meta_k, '.' ) ) {
					$key_found = true;

					$first = current( explode( '.', $meta_k ) );

					if ( isset( $pod->fields[ $first ] ) ) {
						$meta_cache[ $meta_k ] = $pod->field( array(
							'name'     => $meta_k,
							'single'   => $single,
							'get_meta' => true
						) );

						if ( ( ! is_array( $meta_cache[ $meta_k ] ) || ! isset( $meta_cache[ $meta_k ][0] ) ) && $single ) {
							if ( empty( $meta_cache[ $meta_k ] ) && ! is_array( $meta_cache[ $meta_k ] ) && $single ) {
								$meta_cache[ $meta_k ] = array();
							} else {
								$meta_cache[ $meta_k ] = array( $meta_cache[ $meta_k ] );
							}
						}

						if ( in_array( $pod->fields[ $first ]['type'], PodsForm::tableless_field_types() ) && isset( $meta_cache[ '_pods_' . $first ] ) ) {
							unset( $meta_cache[ '_pods_' . $first ] );
						}
					}
				}
			}
		}

		if ( ! $no_conflict ) {
			pods_no_conflict_off( $meta_type );
		}

		unset( $pod ); // memory clear

		if ( ! $key_found ) {
			return $_null;
		}

		if ( ! $single && isset( $GLOBALS['wp_object_cache'] ) && is_object( $GLOBALS['wp_object_cache'] ) ) {
			wp_cache_set( $object_id, $meta_cache, 'pods_' . $meta_type . '_meta' );
		}

		if ( empty( $meta_key ) ) {
			return $meta_cache;
		} elseif ( isset( $meta_cache[ $meta_key ] ) ) {
			$value = $meta_cache[ $meta_key ];
		} else {
			$value = '';
		}

		if ( ! is_numeric( $value ) && empty( $value ) ) {
			if ( $single ) {
				$value = '';
			} else {
				$value = array();
			}
		} // get_metadata requires $meta[ 0 ] to be set for first value to be retrieved
		elseif ( ! is_array( $value ) ) {
			$value = array( $value );
		}

		return $value;
	}

	/**
	 * @param        $object_type
	 * @param null   $_null
	 * @param int    $object_id
	 * @param string $meta_key
	 * @param string $meta_value
	 * @param bool   $unique
	 *
	 * @return bool|int|null

Consider making the return type a bit more specific; maybe use null|integer.

	 */
	public function add_meta( $object_type, $_null = null, $object_id = 0, $meta_key = '', $meta_value = '', $unique = false ) {

		if ( pods_tableless() ) {
			return $_null;
		}

		$object = $this->get_object( $object_type, $object_id );

		if ( empty( $object_id ) || empty( $object ) || ! isset( $object['fields'][ $meta_key ] ) ) {
			return $_null;
		}

		if ( in_array( $object['fields'][ $meta_key ]['type'], PodsForm::tableless_field_types() ) ) {
			if ( ! is_object( self::$current_field_pod ) || self::$current_field_pod->pod != $object['name'] ) {
				self::$current_field_pod = pods( $object['name'], $object_id );
			} elseif ( self::$current_field_pod->id() != $object_id ) {
				self::$current_field_pod->fetch( $object_id );
			}

			$pod = self::$current_field_pod;

			$pod->add_to( $meta_key, $meta_value );
		} else {
			if ( ! is_object( self::$current_field_pod ) || self::$current_field_pod->pod != $object['name'] ) {
				self::$current_field_pod = pods( $object['name'] );
			}

			$pod = self::$current_field_pod;

			$pod->save( $meta_key, $meta_value, $object_id, array(
				'podsmeta_direct' => true,
				'error_mode'      => 'false'
			) );
		}

		return $object_id;
	}

	/**
	 * @param        $object_type
	 * @param null   $_null
	 * @param int    $object_id
	 * @param string $meta_key
	 * @param string $meta_value
	 * @param string $prev_value
	 *
	 * @return bool|int|null

Consider making the return type a bit more specific; maybe use null|integer.

	 */
	public function update_meta( $object_type, $_null = null, $object_id = 0, $meta_key = '', $meta_value = '', $prev_value = '' ) {

		if ( pods_tableless() ) {
			return $_null;
		}

		$object = $this->get_object( $object_type, $object_id );

		if ( empty( $object_id ) || empty( $object ) || ! isset( $object['fields'][ $meta_key ] ) ) {
			return $_null;
		}

		if ( ! is_object( self::$current_field_pod ) || self::$current_field_pod->pod != $object['name'] ) {
			self::$current_field_pod = pods( $object['name'] );
		}

		$pod = self::$current_field_pod;

		if ( ( isset( $pod->fields[ $meta_key ] ) || false !== strpos( $meta_key, '.' ) ) && $pod->row !== null ) {

			$key = $meta_key;
			if ( false !== strpos( $meta_key, '.' ) ) {
				$key = current( explode( '.', $meta_key ) );
			}

			$pod->row[ $meta_key ] = $meta_value;

			if ( isset( $pod->fields[ $key ] ) ) {
				if ( in_array( $pod->fields[ $key ]['type'], PodsForm::tableless_field_types() ) && isset( $meta_cache[ '_pods_' . $key ] ) ) {

The variable $meta_cache seems to never exist, and therefore isset should always return false. Did you maybe rename this variable?

					unset( $meta_cache[ '_pods_' . $key ] );
				}
			}

Blank line found after control structure

		}

		$pod->save( $meta_key, $meta_value, $object_id, array( 'podsmeta_direct' => true, 'error_mode' => 'false' ) );

		return $object_id;
	}

	/**
	 * @param        $object_type
	 * @param null   $_null
	 * @param int    $object_id
	 * @param string $meta_key
	 * @param string $meta_value
	 * @param bool   $delete_all
	 *
	 * @return null
	 */
	public function delete_meta( $object_type, $_null = null, $object_id = 0, $meta_key = '', $meta_value = '', $delete_all = false ) {

		if ( pods_tableless() ) {
			return $_null;
		}

		$object = $this->get_object( $object_type, $object_id );

		if ( empty( $object_id ) || empty( $object ) || ! isset( $object['fields'][ $meta_key ] ) ) {
			return $_null;
		}

		// @todo handle $delete_all (delete the field values from all pod items)
		if ( ! empty( $meta_value ) && in_array( $object['fields'][ $meta_key ]['type'], PodsForm::tableless_field_types() ) ) {
			if ( ! is_object( self::$current_field_pod ) || self::$current_field_pod->pod != $object['name'] ) {
				self::$current_field_pod = pods( $object['name'], $object_id );
			} elseif ( self::$current_field_pod->id() != $object_id ) {
				self::$current_field_pod->fetch( $object_id );
			}

			$pod = self::$current_field_pod;

			$pod->remove_from( $meta_key, $meta_value );
		} else {
			if ( ! is_object( self::$current_field_pod ) || self::$current_field_pod->pod != $object['name'] ) {
				self::$current_field_pod = pods( $object['name'] );
			}

			$pod = self::$current_field_pod;

			$pod->save( array( $meta_key => null ), null, $object_id, array(
				'podsmeta_direct' => true,
				'error_mode'      => 'false'
			) );
		}

		return $_null;
	}

	/**
	 * @param $id
	 *
	 * @return bool|void
	 */
	public function delete_post( $id ) {

		$post = get_post( $id );

		if ( empty( $post ) ) {
			return;
		}

		$id        = $post->ID;
		$post_type = $post->post_type;

		return $this->delete_object( 'post_type', $id, $post_type );
	}

	/**
	 * @param $id
	 */
	public function delete_taxonomy( $id ) {

		/**
		 * @var $wpdb WPDB
		 */
		global $wpdb;

Use of global functionality is not recommended; it makes your code harder to test, and less reusable.

		$terms = $wpdb->get_results( "SELECT `term_id`, `taxonomy` FROM `{$wpdb->term_taxonomy}` WHERE `term_taxonomy_id` = {$id}" );

Usage of a direct database call is discouraged.

Usage of a direct database call without caching is prohibited. Use wp_cache_get / wp_cache_set.

		if ( empty( $terms ) ) {
			return;
		}

		foreach ( $terms as $term ) {
			$id       = $term->term_id;
			$taxonomy = $term->taxonomy;

			$this->delete_object( 'taxonomy', $id, $taxonomy );
		}
	}

	/**
	 * Hook the split_shared_term action and point it to this method
	 *
	 * Fires after a previously shared taxonomy term is split into two separate terms.
	 *
	 * @param int    $term_id          ID of the formerly shared term.
	 * @param int    $new_term_id      ID of the new term created for the $term_taxonomy_id.
	 * @param int    $term_taxonomy_id ID for the term_taxonomy row affected by the split.
	 * @param string $taxonomy         Taxonomy for the split term.
	 */
	public static function split_shared_term( $term_id, $new_term_id, $term_taxonomy_id, $taxonomy ) {

		require_once( PODS_DIR . 'classes/PodsTermSplitting.php' );

		$term_splitting = new Pods_Term_Splitting( $term_id, $new_term_id, $taxonomy );
		$term_splitting->split_shared_term();

	}

	/**
	 * @param $id
	 *
	 * @return bool
	 */
	public function delete_user( $id ) {

		return $this->delete_object( 'user', $id );
	}

	/**
	 * @param $id
	 *
	 * @return bool
	 */
	public function delete_comment( $id ) {

		return $this->delete_object( 'comment', $id );
	}

	/**
	 * @param $id
	 *
	 * @return bool
	 */
	public function delete_media( $id ) {

		return $this->delete_object( 'media', $id );
	}

	/**
	 * @param      $type
	 * @param      $id
	 * @param null $name
	 *
	 * @return bool
	 */
	public function delete_object( $type, $id, $name = null ) {

		if ( empty( $name ) ) {
			$name = $type;
		}

		$object = $this->object_get( $type, $name );

		if ( ! empty( $object ) ) {
			$params = array(
				'pod'    => pods_var( 'name', $object ),
				'pod_id' => pods_var( 'id', $object ),
				'id'     => $id
			);

			return pods_api()->delete_pod_item( $params, false );
		} else {
			return pods_api()->delete_object_from_relationships( $id, $type, $name );
		}
	}
}