The real "work" in this keyword is not finding the URLs—it’s the work of securing them. If you manage any PHP application that still uses raw $_GET['id'] in SQL queries, treat this article as a wake-up call. Update your code, audit your logs, and remember: what Google indexes, the world can see.
In secure applications, you rarely see id1 . Instead, you see product_id , user_id , or RESTful URLs like /products/42 . The presence of id1 suggests a few possible anti-patterns: inurl php id1 work