Fwd: [PHP-DEV] Is it possible to get the variable name from the HashTable structure?

FWD I forgot to CC the list ;-( ---------- Forwarded message ---------- Here's what I want, If a user runs code like this, and $_GET['MH'] happens to be undefined, I want to know both '_GET' and 'MH': if ($_GET['MH'] == 'dog') { do-something } But so far I can only get the 'MH' part ( I checked the 'Undefined index' part in a zend function, can't remember the exact name ) On Sun, May 4, 2014 at 11:46 PM, Johannes Schlüter <johannes@schlueters.de> wrote: > On Sun, 2014-05-04 at 16:13 +0100, Joe Watkins wrote: >> On Sun, 2014-05-04 at 20:21 +0800, Aaron Lewis wrote: >> > Hi, >> > >> > So PHP uses HashTable to store variables like $_POST, >> > >> > From a HashTable structure, can I get the array name? > > No, a zval (which might point to a hash tale) doesn't refer to a name. > For one there in 99.99% is no need but it would cost memory(and CPU > cycles to maintain) and then there miht e multiple nae (references) or > none (temporaries etc.) > > If you know the parent such hacks like > >> https://gist.github.com/krakjoe/50603be7ffb1ae6e9156 > > might work, but even this solution is flawed: The easy thing it doesn't > support is references, it should return an array of all names. It won't > work for complex things, though. > > If you need such a functionality I'd suggest to take a step back and > think what you actually want to do ... usually there is a better > solution. > > johannes > > -- Best Regards, Aaron Lewis - PGP: 0x13714D33 - http://pgp.mit.edu/ Finger Print: 9F67 391B B770 8FF6 99DC D92D 87F6 2602 1371 4D33 -- Best Regards, Aaron Lewis - PGP: 0x13714D33 - http://pgp.mit.edu/ Finger Print: 9F67 391B B770 8FF6 99DC D92D 87F6 2602 1371 4D33