Function to add new user to Wordpress

add_admin_to_wordpress.php

/***********************
ADD USER
Useful script to programatically add an admin user to Wordpress if you dont have access to the admin, but do have access to the file system
***********************/

function wpb_admin_account()
{
  $user = 'adminusername'; // Your username
	$pass = 'adminpassword'; // Your password
	$email = '[email protected]'; // Your email
	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' );
	}
}
add_action('init','wpb_admin_account');