Re: questions about $_SERVER

On Sat, Mar 10, 2012 at 9:37 AM, Tedd Sperling <tedd.sperling@gmail.com> wrote: > On Mar 9, 2012, at 10:20 PM, Jim Giner wrote: >> "tamouse mailing lists" <tamouse.lists@gmail.com> wrote in message >> >> news:CAHUC_t8g43GE3xqvSU5SwFePGS1XG=TK1MhRbem9GjAArVEd8g@mail.gmail.com... >>> On Mon, Feb 13, 2012 at 2:39 PM, Tedd Sperling <tedd.sperling@gmail.com> >>> wrote: >>>> On Feb 13, 2012, at 4:10 AM, Stuart Dallas wrote: >>>>> On 13 Feb 2012, at 06:28, Rui Hu wrote: >>>>>> How PHP sets variables in $_SERVER, say, $DOCUMENT_ROOT? What should I >>>>>> know >>>>>> if I want to modify $_SERVER myself? >>>>> >>>>> Once your script starts the superglobals are no different to any other >>>>> variables, except that they're in scope at all times. >>>> >>>> That's probably the reason why they are named "SuperGlobals". :-) >>>> >>>> But to be more descriptive, these are simply globals that are predefined >>>> by php -- see: >>>> >>>> >>>> http://php.net/manual/en/language.variables.superglobals.php >>>> >>>> I believe, (please show me otherwise) there are no "globals" in PHP other >>>> than SuperGlobals. >>> >>> Assuming you mean pre-defined ones, there shouldn't be, since no other >>> ones are documented. If there are, then either they should be >>> documented, or they should be ignored as it can be dangerous to use >>> undocumented features. :) >> >> Just to be clear - you asked if it were true that "there are no "globals" in >> PHP other than SuperGlobals:  Don't forget that anything that you declare as >> global in a script is a global for that instance of that script (and >> whatever includes, etc. that it calls during its run) > > That's correct, but to access those variables outside of their scope (such as a function) > you do via a SuperGlobal, namely $GLOBAL['whatever']. > > As such, there are no "globals" in PHP other than SuperGlobals. As I said, if > I'm wrong, please show me otherwise. I guess I don't know what you mean by "globals". I know what globals are, but not "globals".