PHP filter_input(INPUT_SERVER, 'REQUEST_METHOD') returns null?

Question

Why does this line return null in my live server?

filter_input(INPUT_SERVER, \'REQUEST_METHOD\');

The live server is p

Answer 1

I had the same problem where it was working on my local machine (OSX Mavericks, PHP version 5.4.24) and not on my live server (Cent OS 5). I upgraded the server from 5.3.9 to 5.5.15 (and added the mb and mcrypt functions although that's probably irrelevant) and now it works.

This probably isn't helpful if you're on a shared host but you could ask them if they can rebuild PHP/Apache.