This feature acts as an automated security and modernization layer for old index.php?id= systems, which are historically prone to SQL injection and cross-site scripting (XSS).
http://example.com/index.php?id=55
inurl:index.php?id= became the quintessential "Google Dork"—a search string used to find vulnerable targets. inurl indexphpid patched
(should fail if patched) ' OR '1'='1 1 AND 1=1 1 AND SLEEP(5) Beyond the Search Bar: Understanding the "inurl:index
In legacy PHP code (pre-2012 era), developers often wrote queries like this: inurl indexphpid patched