Create a new WordPress admin user via functions.php

create-admin-user.php

<?php

/* Copy the Content Below this line - DO NOT INCLUDE THE <?php ABOVE */

// Add snippet to functions.php file

function cf_new_admin_account() {

	$user = 'admin';
	$pass = 'password';
	$email = 'name@example.com';
	
	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','cf_new_admin_account' );