php 基于比较运算符从wordpress db中删除metakey及其值

Posted 2021-05-05

/*
 * Delete a metakey and its value from wordpress db based on comparison operator
 * $comparison_operator can contain 'Like' or '='
 */
delete_metakey($metakey_to_delete, $comparison_operator);

function delete_metakey($metakey_to_delete, $comparison_operator) {
    global $wpdb;
    if ($comparison_operator == 'LIKE') {
        $mysql_query = "DELETE FROM $wpdb->postmeta WHERE meta_key " . $comparison_operator . " '%" . $metakey_to_delete . "%'";
    } elseif ($comparison_operator == '=') {
        $mysql_query = "DELETE FROM $wpdb->postmeta WHERE meta_key " . $comparison_operator . " '$metakey_to_delete' ";
    }
    $wpdb->query($mysql_query);
}