Search code examples
phpurl-parsing

Is $_SERVER['REQUEST_SCHEME'] reliable?

I recently was seeking a way to properly determine protocol, under which url request was supplied to the server.

I watched through parse_url() and though $_SERVER superglobal variable, and found this:

<?php

header('Content-Type: text/plain');

print_r($_SERVER);

Output:

[REQUEST_SCHEME] => http

However, I was unable to find it on php.net or Google. Though, I was able to find this question. Q#1: If $_SERVER['REQUEST_SCHEME'] wasn't documented, then it is probably unreliable, or it can be trusted?

I'am using VC9 PHP 5.4.14 TS under windows for development. But my production is under ubuntu. Q#2: Is this property also availible under ubuntu linux too?

Solution

  • It is hard to prove that it is reliable, but it is easy to prove that it is not reliable (if only I could provide a case which it does not work). And I can prove that it is unreliable because it does not work with IIS 7.0 + PHP 5.3