Inurl Indexphpid Patched ((top)) Guide
This is rarely secure. Attackers can use encoding tricks, case variations (SeLeCt), or inline comments to bypass these filters. A "patched" system should not rely on blocking bad input but rather on structuring the code safely to handle any input.
The security community has a shorthand for this phenomenon: inurl indexphpid patched
began using "Prepared Statements," which essentially told the database: "I am expecting a number, and only a number. Ignore everything else." This is rarely secure