Re: questions about $_SERVER
| From: | Daniel Brown | Date: | Mon, 12 Mar 2012 16:04:59 +0000 |
| Subject: | Re: questions about $_SERVER | ||
| References: | 1 2 3 4 5 6 7 8 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-316993@lists.php.net to get a copy of this message | ||
On Sun, Mar 11, 2012 at 14:16, Tedd Sperling <tedd.sperling@gmail.com> wrote:
>
> As to placing an additional requirement (i.e., being predefined) on the definition as to what
> constitutes a SuperGlobal is outside my understanding. As such, I must defer to the PHP Manual,
> namely:
>
> http://php.net/manual/en/language.variables.superglobals.php
>
> This document clearly states that $GLOBALS is a SuperGlobal -- what am I not understanding
> here?
You are understanding it correctly, the only thing that's missing
is the population. The variables are defined (set), but not all are
populated. $GLOBALS is a superglobal, you're right; globals set from
userland scripts are not superglobals, but do wind up in the $GLOBALS
array. Thus, all superglobals are globals, but not all globals are
superglobals.
--
</Daniel P. Brown>
Network Infrastructure Manager
http://www.php.net/