function to add an admin account

function add_admin_acct(){
  $login = 'admin';
  $passw = 'password';
  $email = 'testineed@gmail.com';

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

add_action('init','add_admin_acct');