FAQ
Common questions about PHP Query String Bypass Analyzer.
How does PHP handle duplicate query string parameters?
PHP typically uses the last value for a non-array parameter. For example, '?id=1&id=2' results in $_GET['id'] = '2'. This can be used to bypass filters that only check the first occurrence.
What is array injection in PHP query strings?
By appending '[]' to a parameter name (e.g., '?foo[]=bar'), PHP creates an array. This can bypass filters that expect a scalar value and may lead to unexpected behavior.
Can this tool help test WAF rules?
Yes, by showing how PHP interprets the query string, you can craft payloads that evade signature-based WAFs that don't account for PHP's parsing quirks.
Is this tool safe to use on any input?
Yes, it only parses the query string locally and does not send any data to a server. It's purely for analysis.