57 lines
1.6 KiB
PHP
57 lines
1.6 KiB
PHP
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<?php
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/*
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Adapted from Purge Transients by Seebz
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https://github.com/Seebz/Snippets/tree/master/Wordpress/plugins/purge-transients
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*/
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if ( ! function_exists('jp_purge_transients') ) {
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function jp_purge_transients( $older_than = '1 hour' ) {
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global $wpdb;
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$older_than_time = strtotime( '-' . $older_than );
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if ( $older_than_time > time() || $older_than_time < 1 ) {
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return false;
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}
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$sql = $wpdb->prepare( "
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SELECT REPLACE(option_name, '_transient_timeout_jpp_', '') AS transient_name
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FROM {$wpdb->options}
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WHERE option_name LIKE '\_transient\_timeout\_jpp\__%%'
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AND option_value < %d
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", $older_than_time );
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$transients = $wpdb->get_col( $sql );
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$options_names = array();
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foreach( $transients as $transient ) {
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$options_names[] = '_transient_jpp_' . $transient;
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$options_names[] = '_transient_timeout_jpp_' . $transient;
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}
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if ($options_names) {
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$option_names_string = implode( ', ', array_fill( 0, count( $options_names ), '%s') );
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$delete_sql = "DELETE FROM {$wpdb->options} WHERE option_name IN ($option_names_string)";
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$delete_sql = call_user_func_array( array($wpdb, 'prepare'), array_merge( array( $delete_sql ), $options_names ) );
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$result = $wpdb->query( $delete_sql );
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if ( !$result ) {
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return false;
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}
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}
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return;
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}
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}
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function jp_purge_transients_activation() {
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if ( !wp_next_scheduled( 'jp_purge_transients_cron' ) ) {
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wp_schedule_event( time(), 'daily', 'jp_purge_transients_cron' );
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}
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}
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add_action( 'admin_init', 'jp_purge_transients_activation' );
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add_action( 'jp_purge_transients_cron', 'jp_purge_transients' );
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