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<?php |
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// Exit if accessed directly |
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if ( ! defined( 'ABSPATH' ) ) exit; |
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abstract class Wpinv_DB { |
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/** |
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* The name of our database table |
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* |
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* @access public |
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* @since 1.0.0 |
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*/ |
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public $table_name; |
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/** |
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* The version of our database table |
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* |
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* @access public |
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* @since 1.0.0 |
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*/ |
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public $version; |
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/** |
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* The name of the primary column |
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* |
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* @access public |
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* @since 1.0.0 |
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*/ |
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public $primary_key; |
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/** |
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* Get things started |
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* |
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* @access public |
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* @since 1.0.0 |
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*/ |
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public function __construct() {} |
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/** |
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* Whitelist of columns |
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* |
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* @access public |
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* @since 1.0.0 |
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* @return array |
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*/ |
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public function get_columns() { |
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return array(); |
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} |
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/** |
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* Default column values |
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* |
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* @access public |
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* @since 1.0.0 |
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* @return array |
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*/ |
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public function get_column_defaults() { |
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return array(); |
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} |
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/** |
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* Retrieve a row by the primary key |
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* |
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* @access public |
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* @since 1.0.0 |
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* @return object |
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*/ |
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public function get( $row_id ) { |
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global $wpdb; |
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return $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $this->table_name WHERE $this->primary_key = %s LIMIT 1;", $row_id ) ); |
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} |
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/** |
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* Retrieve a row by a specific column / value |
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* |
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* @access public |
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* @since 1.0.0 |
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* @return object |
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*/ |
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public function get_by( $column, $row_id ) { |
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global $wpdb; |
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$column = esc_sql( $column ); |
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return $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $this->table_name WHERE $column = %s LIMIT 1;", $row_id ) ); |
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} |
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/** |
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* Retrieve a specific column's value by the primary key |
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* |
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* @access public |
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* @since 1.0.0 |
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* @return string |
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*/ |
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public function get_column( $column, $row_id ) { |
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global $wpdb; |
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$column = esc_sql( $column ); |
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return $wpdb->get_var( $wpdb->prepare( "SELECT $column FROM $this->table_name WHERE $this->primary_key = %s LIMIT 1;", $row_id ) ); |
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} |
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/** |
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* Retrieve a specific column's value by the the specified column / value |
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* |
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* @access public |
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* @since 1.0.0 |
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* @return string |
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*/ |
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public function get_column_by( $column, $column_where, $column_value ) { |
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global $wpdb; |
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$column_where = esc_sql( $column_where ); |
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$column = esc_sql( $column ); |
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return $wpdb->get_var( $wpdb->prepare( "SELECT $column FROM $this->table_name WHERE $column_where = %s LIMIT 1;", $column_value ) ); |
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} |
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/** |
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* Insert a new row |
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* |
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* @access public |
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* @since 1.0.0 |
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* @return int |
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*/ |
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public function insert( $data, $type = '' ) { |
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global $wpdb; |
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// Set default values |
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$data = wp_parse_args( $data, $this->get_column_defaults() ); |
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do_action( 'wpinv_pre_insert_' . $type, $data ); |
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// Initialise column format array |
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$column_formats = $this->get_columns(); |
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// Force fields to lower case |
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$data = array_change_key_case( $data ); |
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// White list columns |
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$data = array_intersect_key( $data, $column_formats ); |
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// Reorder $column_formats to match the order of columns given in $data |
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$data_keys = array_keys( $data ); |
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$column_formats = array_merge( array_flip( $data_keys ), $column_formats ); |
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$wpdb->insert( $this->table_name, $data, $column_formats ); |
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$wpdb_insert_id = $wpdb->insert_id; |
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do_action( 'wpinv_post_insert_' . $type, $wpdb_insert_id, $data ); |
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return $wpdb_insert_id; |
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} |
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/** |
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* Update a row |
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* |
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* @access public |
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* @since 1.0.0 |
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* @return bool |
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*/ |
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public function update( $row_id, $data = array(), $where = '' ) { |
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global $wpdb; |
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// Row ID must be positive integer |
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$row_id = absint( $row_id ); |
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if( empty( $row_id ) ) { |
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return false; |
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} |
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if( empty( $where ) ) { |
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$where = $this->primary_key; |
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} |
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// Initialise column format array |
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$column_formats = $this->get_columns(); |
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// Force fields to lower case |
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$data = array_change_key_case( $data ); |
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// White list columns |
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$data = array_intersect_key( $data, $column_formats ); |
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// Reorder $column_formats to match the order of columns given in $data |
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$data_keys = array_keys( $data ); |
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$column_formats = array_merge( array_flip( $data_keys ), $column_formats ); |
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if ( false === $wpdb->update( $this->table_name, $data, array( $where => $row_id ), $column_formats ) ) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Delete a row identified by the primary key |
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* |
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* @access public |
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* @since 1.0.0 |
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* @return bool |
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*/ |
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public function delete( $row_id = 0 ) { |
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global $wpdb; |
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// Row ID must be positive integer |
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$row_id = absint( $row_id ); |
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if( empty( $row_id ) ) { |
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return false; |
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} |
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if ( false === $wpdb->query( $wpdb->prepare( "DELETE FROM $this->table_name WHERE $this->primary_key = %d", $row_id ) ) ) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Check if the given table exists |
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* |
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* @since 2.4 |
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* @param string $table The table name |
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* @return bool If the table name exists |
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*/ |
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public function table_exists( $table ) { |
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global $wpdb; |
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$table = sanitize_text_field( $table ); |
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return $wpdb->get_var( $wpdb->prepare( "SHOW TABLES LIKE '%s'", $table ) ) === $table; |
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} |
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/** |
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* Check if the table was ever installed |
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* |
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* @since 2.4 |
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* @return bool Returns if the customers table was installed and upgrade routine run |
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*/ |
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public function installed() { |
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return $this->table_exists( $this->table_name ); |
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} |
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} |
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