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/*
	Requires PMPro v1.4+
	Code to delete WP user accounts when a member cancels their PMPro account.
	Users are not deleted if:
	(1) They are not cancelling their membership (i.e. $level_id != 0)
	(2) They are an admin.
	(3) The level change was initiated from the WP Admin Dashboard 
	(e.g. when an admin changes a user's level via the edit user's page)
*/
function my_pmpro_after_change_membership_level($level_id, $user_id)
{
	//are they cancelling? and don't do this from admin (e.g. when admin's are changing levels)
	if(empty($level_id) && !is_admin())
	{
		//only delete non-admins
		if(!user_can($user_id, "manage_options"))
		{
			require_once(ABSPATH . "/wp-admin/includes/user.php");
			wp_delete_user($user_id);	
		}
	}
}
add_action("pmpro_after_change_membership_level", "my_pmpro_after_change_membership_level", 10, 2);