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<?php |
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/** |
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* GetPaid_Cache_Helper class. |
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* |
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*/ |
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defined( 'ABSPATH' ) || exit; |
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/** |
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* GetPaid_Cache_Helper. |
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*/ |
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class GetPaid_Cache_Helper { |
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/** |
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* Transients to delete on shutdown. |
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* |
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* @var array Array of transient keys. |
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*/ |
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private static $delete_transients = array(); |
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/** |
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* Hook in methods. |
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*/ |
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public static function init() { |
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add_action( 'shutdown', array( __CLASS__, 'delete_transients_on_shutdown' ), 10 ); |
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add_action( 'wp', array( __CLASS__, 'prevent_caching' ) ); |
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} |
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/** |
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* Add a transient to delete on shutdown. |
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* |
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* @since 1.0.19 |
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* @param string|array $keys Transient key or keys. |
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*/ |
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public static function queue_delete_transient( $keys ) { |
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self::$delete_transients = array_unique( array_merge( is_array( $keys ) ? $keys : array( $keys ), self::$delete_transients ) ); |
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} |
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/** |
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* Transients that don't need to be cleaned right away can be deleted on shutdown to avoid repetition. |
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* |
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* @since 1.0.19 |
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*/ |
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public static function delete_transients_on_shutdown() { |
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if ( self::$delete_transients ) { |
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foreach ( self::$delete_transients as $key ) { |
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delete_transient( $key ); |
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} |
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self::$delete_transients = array(); |
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} |
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} |
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/** |
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* Get prefix for use with wp_cache_set. Allows all cache in a group to be invalidated at once. |
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* |
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* @param string $group Group of cache to get. |
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* @return string |
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*/ |
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public static function get_cache_prefix( $group ) { |
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// Get cache key. |
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$prefix = wp_cache_get( 'getpaid_' . $group . '_cache_prefix', $group ); |
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if ( false === $prefix ) { |
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$prefix = microtime(); |
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wp_cache_set( 'getpaid_' . $group . '_cache_prefix', $prefix, $group ); |
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} |
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return 'getpaid_cache_' . $prefix . '_'; |
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} |
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/** |
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* Invalidate cache group. |
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* |
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* @param string $group Group of cache to clear. |
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* @since 1.0.19 |
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*/ |
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public static function invalidate_cache_group( $group ) { |
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wp_cache_set( 'getpaid_' . $group . '_cache_prefix', microtime(), $group ); |
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} |
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/** |
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* Prevent caching on certain pages |
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*/ |
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public static function prevent_caching() { |
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if ( ! is_blog_installed() ) { |
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return; |
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} |
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if ( wpinv_is_checkout() || wpinv_is_success_page() || wpinv_is_invoice_history_page() || wpinv_is_subscriptions_history_page() ) { |
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self::set_nocache_constants(); |
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nocache_headers(); |
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} |
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} |
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/** |
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* Get transient version. |
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* |
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* |
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* @param string $group Name for the group of transients we need to invalidate. |
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* @param boolean $refresh true to force a new version. |
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* @return string transient version based on time(), 10 digits. |
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*/ |
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public static function get_transient_version( $group, $refresh = false ) { |
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$transient_name = $group . '-transient-version'; |
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$transient_value = get_transient( $transient_name ); |
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if ( false === $transient_value || true === $refresh ) { |
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$transient_value = (string) time(); |
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set_transient( $transient_name, $transient_value ); |
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} |
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return $transient_value; |
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} |
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/** |
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* Set constants to prevent caching by some plugins. |
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* |
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* @param mixed $return Value to return. Previously hooked into a filter. |
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* @return mixed |
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*/ |
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public static function set_nocache_constants( $return = true ) { |
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getpaid_maybe_define_constant( 'DONOTCACHEPAGE', true ); |
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getpaid_maybe_define_constant( 'DONOTCACHEOBJECT', true ); |
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getpaid_maybe_define_constant( 'DONOTCACHEDB', true ); |
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return $return; |
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} |
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} |
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GetPaid_Cache_Helper::init(); |
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AyeCode /
invoicing
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.