Tag: whitelist

PHP check if array contains any key other than some whitelisted

I would like to check all keys of a global GET array and do something, if it contains keys, other than some whitelisted ones from an array. Let’s say the current url is: Just for better visualization: These GET parameters are all available in the global GET variable which looks something like this: The keys I accept and want to

How does this whitelist array affect $_POST data inside the foreach()?

php post validation whitelist

I’m confused as to exactly what this does and how do you use it in your form processing. Does it only remove unwanted $_POST entries that are not in $expected[]? Should I still use $_POST[ ‘carModel’] to get the value? Or might there be a better way? Answer Right, the pseudo-code ${$variable} is the creation of a new variable, aka: