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<?php /** * Utility class to contain all transient related functions within LearnDash. * * @since 3.1 * @package LearnDash */ if ( ! defined( 'ABSPATH' ) ) { exit; } if ( ! class_exists( 'LDLMS_Transients' ) ) { /** * Class to create the instance. */ class LDLMS_Transients { /** * Public constructor for class * * @since 3.1 */ public function __construct() { } /** * Get a Transient * * @since 3.1 * * @param string $transient_key The transient key to retreive. * @return mixed $transient_data the retreived transient data or false if expired. */ public static function get( $transient_key = '' ) { $transient_data = false; if ( ( ! empty( $transient_key ) ) && ( ! apply_filters( 'learndash_transients_disabled', LEARNDASH_TRANSIENTS_DISABLED, $transient_key ) ) ) { $transient_data = get_transient( $transient_key ); } return $transient_data; } /** * Utility function to interface with WP set_transient function. This function allow for * filtering if to actually write the transient. * * @since 3.1 * @param string $transient_key The transient key. * @param mixed $transient_data Data to store in transient. * @param integer $transient_expire Expiration time for transient. */ public static function set( $transient_key = '', $transient_data = '', $transient_expire = MINUTE_IN_SECONDS ) { if ( ( ! empty( $transient_key ) ) && ( ! apply_filters( 'learndash_transients_disabled', LEARNDASH_TRANSIENTS_DISABLED, $transient_key ) ) ) { return set_transient( $transient_key, $transient_data, $transient_expire ); } } public static function purge_all() { if ( ! apply_filters( 'learndash_transients_disabled', LEARNDASH_TRANSIENTS_DISABLED, 'learndash_all_purge' ) ) { global $wpdb; $sql_str = 'DELETE FROM ' . $wpdb->options . " WHERE option_name LIKE '_transient_learndash_%' OR option_name LIKE '_transient_timeout_learndash_%'"; $wpdb->query( $sql_str ); } } // End of functions. } }
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