Self Destructing Create Admin User for WordPress

create_admin.php

<?php

require_once 'wp-config.php';

// Add your desired credentials here. Using these is a super bad idea.
//$user = 'YOUR USERNAME';
//$pass = 'YOUR_SUPER_SECURE_PASSWORD';
//$email = 'YOUR@ADMIN_EMAIL.ADDRESS';

if ( ! username_exists( $user )  && ! email_exists( $email ) ) {
	$user_id = wp_create_user( $user, $pass, $email );
	$user = new WP_User( $user_id );
	$user->set_role( 'administrator' );

	echo 'User created';
} else {
	echo 'User or Email already exists';
}

// self destruct
unlink( __FILE__ );