A classic one ! Once I did the same one, just an echo in a php page. It was at the bottom of the page, after the footer. It was a job for a web designer I was h

A classic one ! Once I did the same one, just an echo in a php page. It was at the bottom of the page, after the footer. It was a job for a web designer I was helping. It's his son who saw it. So we removed it before the client (or anyone, it was in production) feedback to us. Bullet dodged !