Randomize user names for Paid Memberships Pro Member Directory and sort members according to level id or level name

pmpro_member_directory_sql.php

<?php

function my_rand_directory($sqlQuery, $levels, $s, $pn, $limit, $start, $end, $order_by, $order) {
  
  /**
	 *  OPTIONS
	 */

	// Ternary: Set to 1 to sort by membership id or 0 to sort by membership name
	$level_sort_by = 0 ? 'mu.membership_id' : 'm.name'; 

	// Ternary: Set to 1 for ascending or 0 for descending
	$my_sort_order = 1 ? 'ASC' : 'DESC'; 

	// END OPTIONS

	// $sqlQuery = str_replace("u.display_name ".$order, "mu.membership_id DESC, RAND()", $sqlQuery);
	$sqlQuery = str_replace("u.display_name ".$order, "$level_sort_by $my_sort_order, RAND()", $sqlQuery);

	return $sqlQuery;
}

add_filter('pmpro_member_directory_sql', 'my_rand_directory', 10, 9);