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 solve it changing my php.ini from:

variables_order = "GPCS"

To:

variables_order = "GPCSE"

By default PHP wasn't registering the environment variables, so this change enabled them. The interesting is that the INPUT_SERVER variables came back to work too!

Just two addiotional informations, i am using PHP 7.0.13 and as said in other answers, this issue is related to a PHP bug.

Another option is use the following:

filter_var(getenv('REQUEST_METHOD'));