Sorting membership in register page for protected content

code.php

<?php

add_filter( 'ms_model_membership_get_signup_membership_list', 'ms_model_membership_get_memberships_cb', 99, 3 );
function ms_model_membership_get_memberships_cb( $memberships, $exclude_ids, $only_names ) {
	
	// This is IMPORTANT. You have to put all child memberships ID in here in the order you want to show.
	$new_order = array( 262, 266, 263 );
	$new_membership = array();
	
	foreach( $memberships as $membership ){
		if( in_array( $membership->id, $new_order ) ) {
			$pos = array_search($membership->id, $new_order);
			$new_membership[$pos] = $membership;
		}
	}
	ksort( $new_membership );
	
	return $new_membership;
}