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<?php
/**
* Adapted from Purge Transients by Seebz
* https://github.com/Seebz/Snippets/tree/master/Wordpress/plugins/purge-transients
*
* @package automattic/jetpack
*/
if ( ! function_exists( 'jp_purge_transients' ) ) {
/**
* Jetpack Purge Transients.
*
* @access public
* @param string $older_than (default: '1 hour') Older Than.
*/
function jp_purge_transients( $older_than = '1 hour' ) {
global $wpdb;
$older_than_time = strtotime( '-' . $older_than );
if ( $older_than_time > time() || $older_than_time < 1 ) {
return false;
}
$sql = $wpdb->prepare(
// phpcs:ignore WordPress.DB.PreparedSQLPlaceholders.LikeWildcardsInQuery
"SELECT REPLACE(option_name, '_transient_timeout_jpp_', '') AS transient_name FROM {$wpdb->options} WHERE option_name LIKE '\_transient\_timeout\_jpp\__%%' AND option_value < %d",
$older_than_time
);
$transients = $wpdb->get_col( $sql ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared -- $sql is prepared above.
$options_names = array();
foreach ( $transients as $transient ) {
$options_names[] = '_transient_jpp_' . $transient;
$options_names[] = '_transient_timeout_jpp_' . $transient;
}
if ( $options_names ) {
$option_names_string = implode( ', ', array_fill( 0, count( $options_names ), '%s' ) );
$result = $wpdb->query(
$wpdb->prepare(
"DELETE FROM {$wpdb->options} WHERE option_name IN ($option_names_string)", // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared,WordPress.DB.PreparedSQLPlaceholders.UnfinishedPrepare -- the placeholders are set above.
$options_names
)
);
if ( ! $result ) {
return false;
}
}
}
}
/**
* Jetpack Purge Transients Activation.
*
* @access public
* @return void
*/
function jp_purge_transients_activation() {
if ( ! wp_next_scheduled( 'jp_purge_transients_cron' ) ) {
wp_schedule_event( time(), 'daily', 'jp_purge_transients_cron' );
}
}
add_action( 'admin_init', 'jp_purge_transients_activation' );
add_action( 'jp_purge_transients_cron', 'jp_purge_transients' );
|
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