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June 9, 2024 18:43
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List or delete all transients with a specific prefix WordPress
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| function delete_transients_with_prefix( $prefix ) { | |
| foreach ( get_transient_keys_with_prefix( $prefix ) as $key ) { | |
| // delete_transient( $key ); | |
| echo "<br>". $key." ".get_transient( $key ); | |
| } | |
| } | |
| /** | |
| * Gets all transient keys in the database with a specific prefix. | |
| * | |
| * Note that this doesn't work for sites that use a persistent object | |
| * cache, since in that case, transients are stored in memory. | |
| * | |
| * @param string $prefix Prefix to search for. | |
| * @return array Transient keys with prefix, or empty array on error. | |
| */ | |
| function get_transient_keys_with_prefix( $prefix ) { | |
| global $wpdb; | |
| $prefix = $wpdb->esc_like( '_transient_' . $prefix ); | |
| $sql = "SELECT `option_name` FROM $wpdb->options WHERE `option_name` LIKE '%s'"; | |
| $keys = $wpdb->get_results( $wpdb->prepare( $sql, $prefix . '%' ), ARRAY_A ); | |
| if ( is_wp_error( $keys ) ) { | |
| return []; | |
| } | |
| return array_map( function( $key ) { | |
| // Remove '_transient_' from the option name. | |
| return substr( $key['option_name'], strlen( '_transient_' ) ); | |
| }, $keys ); | |
| } | |
| //To fire the function: | |
| delete_transients_with_prefix( 'speedguard'); | |
| //To return both keys and values | |
| function get_transient_keys_with_prefix( $prefix ) { | |
| global $wpdb; | |
| $prefix = $wpdb->esc_like( '_transient_' . $prefix ); | |
| $sql = "SELECT `option_name`, `option_value` FROM $wpdb->options WHERE `option_name` LIKE '%s'"; | |
| $results = $wpdb->get_results( $wpdb->prepare( $sql, $prefix . '%' ), ARRAY_A ); | |
| if ( is_wp_error( $results ) ) { | |
| return []; | |
| } | |
| $transients = array(); | |
| foreach ( $results as $result ) { | |
| // Remove '_transient_' from the option name and store both the key and value | |
| $key = substr( $result['option_name'], strlen( '_transient_' ) ); | |
| $transients[$key] = maybe_unserialize( $result['option_value'] ); | |
| } | |
| return $transients; | |
| } | |
| //To fire the function: | |
| function sz_output() { | |
| $transients = get_transient_keys_with_prefix( 'speedguard' ); | |
| echo '<pre>'; print_r($transients); echo '</pre>'; | |
| } |
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