revslider-query-fix.php

<?php

/**
 * Prevent revslider from adding a query on every request.
 *
 * Calling `update_option('rs_tables_created', true)` causes
 * a database query to run since it's get_option value ("1")
 * does not match the value it is called to set it to.
 *
 * Since the query casts `true` to "1" the update query is run on every request as true !== '1'.
 *
 * This fixes the issue by casting the return value of get_option to a boolean.
 *
 * @see \RevSliderFront::createDBTables
 */
add_filter('option_rs_tables_created', 'boolval');