testing/preview url environment by setting custom url
<?php
if( stripos($_SERVER['REQUEST_URI'], "?test") !== false ):
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
endif;
<!-- Append ?demo to each link on the page -->
<?php if( stripos($_SERVER['REQUEST_URI'], "?demo") !== false ): ?>
<script>
$(document).ready(function() {
$('a').each(function() {
let value = $(this).attr('href');
let updatedLink = value + '?demo';
$(this).attr('href', updatedLink);
});
});
</script>
<?php endif; ?>