Hide a level from non-members

my-pmpro-hide-level.php

<?php   // do not copy this line.
/**
 * This recipe will hide level 2 from non-members
 * 
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
function adjusting_the_pmpro_levels_array( $levels ) {

	if( !pmpro_hasMembershipLevel() ) {
		unset( $levels[2] ); // hide level 14 from non-members
	}

	return $levels;
}
add_filter( 'pmpro_levels_array', 'adjusting_the_pmpro_levels_array' );