<?php
/**
 * Use this script to generate users on the fly and assign them a membership level.
 * Add ?pmpro_create_users=X where X is how many users you want to create.
 * Adjust the $level_id for which level ID you want to give to users.
 * Creates a user with username "user1234" for example.
 */
 function pmpro_create_my_own_users() {

	if ( $_REQUEST['pmpro_create_users'] ) {

		$level_id = 1;

		$e = intval( $_REQUEST['pmpro_create_users'] ); // Allow to dynamically create users from query param. This is used in forloop, so use intvalue.

		$i = 0;
		for ($i=0; $i < $e; $i++) {

			$rand = rand( 0, 9999 );
			$username = "user" . $rand;

			// Let's be fancy and do recursive functions.
			if ( username_exists( $username ) ) {
				$username = my_generate_new_username( $username );
			}

			$user_email = $username . "@email.com";

			$password = wp_generate_password( $length=12, $include_standard_special_chars=false );

			$first_name = "user";
			$last_name = $rand;

			$userdata = array(
				'user_pass' => $password,
				'user_login' => $username,
				'user_email' => $user_email,
				'first_name' => $first_name,
				'last_name' => $last_name
			);

			$user_id = wp_insert_user( $userdata );

			pmpro_changeMembershipLevel( $level_id, $user_id );
		}
	}
}
add_action( 'init', 'pmpro_create_my_own_users' );


function my_generate_new_username( $username ) {

	if ( username_exists( $username ) ) {
			$rand = rand( 0, 9999 );
			$username = "user" . $rand;
			my_generate_new_username( $username );
	}

	return $username;
}