PHP (Plain)

Method 1 — Directly in HTML

<!-- In any PHP file, before </body> -->
<?php
  $signalog_site_id = 'YOUR_SITE_ID';
?>

<script
  src="https://cdn.signalog.co/widget.js"
  data-site-id="<?php echo htmlspecialchars($signalog_site_id); ?>">
</script>

Always escape with htmlspecialchars

Even though the Site ID is a controlled value, escaping output is a habit worth keeping. It guards against XSS if the variable ever comes from user input.

Method 2 — Shared footer file

If you include a shared footer across pages:

<?php
// includes/footer.php
$signalog_site_id = defined('SIGNALOG_SITE_ID') ? SIGNALOG_SITE_ID : '';
?>

<footer>
  <!-- your footer content -->
</footer>

<script
  src="https://cdn.signalog.co/widget.js"
  data-site-id="<?php echo htmlspecialchars($signalog_site_id); ?>">
</script>

Define the constant in your config file:

<?php
// config.php
define('SIGNALOG_SITE_ID', 'site_abc123xyz456');

Include config.php from your bootstrap (index.php or equivalent) so the constant is available everywhere.

Method 3 — Environment variable

For production deployments, read from the environment:

<?php
// Load from environment
$signalog_site_id = getenv('SIGNALOG_SITE_ID') ?: '';
?>

<script
  src="https://cdn.signalog.co/widget.js"
  data-site-id="<?php echo htmlspecialchars($signalog_site_id); ?>">
</script>

Set in your hosting environment (Apache, Nginx FPM, Docker):

export SIGNALOG_SITE_ID=site_abc123xyz456

Or in Apache via .htaccess:

SetEnv SIGNALOG_SITE_ID site_abc123xyz456

Next steps

• Verify the install →