WordPress Escape

I submitted a plugin to WordPress repository. They rejected and ask me to escape these fields :

device_status_tracker/device_status_tracker.php:220: Tracking Number: <?php echo $tracking_code;

Would I use esc_atrr for these fields? Also for fields where I’m doing the following: echo “test”
How would I esc that as well?

Nevermind figured it out.

Sponsor our Newsletter | Privacy Policy | Terms of Service