I have to upgrade a mission-critical (aren't they all?) Ubuntu server from PHP 5.3 to 5.4, and am happy about all but 1 possible problem. Our PHP scripts include around 1200 ISSET() references, nearly all of which check the status of either $_GET or $_POST variables, whose names all comprise strings, not numerics.
I'm aware of the (5.3 v 5.4) distinction where 5.4 returns false when ISSET($var['somestringvalue']) is used, and my query is whether this unwanted behaviour will apply to our string-value $_POST and $_GET variables?
I would knock up a quick 5.4 test server, but we use so many extensions and adjustments that even that's easier said than done. so I thought I'd try my luck here first. Thanks in advance.