Deletes a batch (max 50) of "expired" S2 Members users

s2_member_delete_expired_users.php

<?php
/**
	 * Deletes a batch (max 50) of S2 Members users
	 * @return int number of users deleted
	 */
	public function delete_batch_of_expired_users(){

		$max_users = 50;
		
		$args = array(
		  'role' => 'subscriber',
		  'number' => $max_users,
		  'date_query'    => array(
		     array(
		         'before'     => '-6 months',
		         'inclusive' => true,
		     ),
		  ),
		);
		$user_query = new WP_User_Query($args);

		$count = 0;

		if ( ! empty( $user_query->get_results() ) ) {
			foreach ( $user_query->get_results() as $user ) {
				if( s2member_last_login_time($user->ID) <= strtotime('-6 months') ){
					if( wp_delete_user( $user->ID ) ){
						$count++;
					}
				}
			}
		}

		return $count;

	}