Create WP Admin User via functions.php

create-admin-via-functions.php

<?php
/**
 * Automatically Create WordPress Admin Account
 * Gist Keywords: wordpress, admin, user
 * 
 * @category   WordPress
 * @author     Knol Aust
 * @version    1.0.0
 * @description Automatically creates a WordPress admin account with specified credentials if it doesn't exist. Function should only be run once to inject the user and removed from functions.php when completed. 
 */

function wp_admin_account(){
  $user = 'Username';
  $pass = 'Password';
  $email = '[email protected]';
  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','wp_admin_account');