Global variables

"Charles O'Flynn" <charles@matchwalk.com> wrote in message
news:12hkbhi2nnhpo27@corp.supernews.com...
> "Charles O'Flynn" <charles@matchwalk.com> wrote in message
> news:12hka05ljfihp35@corp.supernews.com...
> |
> | "Oli Filth" <catch@olifilth.co.uk> wrote in message
> | news:fEiSg.32264$TF5.8307@newsfe1-win.ntli.net...
> || Jerry Stuckle said the following on 26/09/2006 22:07:
> || > Charles O'Flynn wrote:
> || >> Thanks for the quick reply, Johnny, but I've been looking at the
page
> | you
> || >> refer to all afternoon and it doesn't seem to work for me. For
> | instance,
> || >> (and I'm only illustrating the specific problem I seem to have
> || >> hereunder)...
> || >> ------------------------------------
> || >> $variable;
> || >>
> || >> function printsomething()
> || >> {
> || >> global $variable;
> || >>
> || >> $variable = 'Test'.<b />;
> || >> echo $variable;
> || >> }
> || >>
> || >> printsomething();
> || >> echo $variable;
> || >> ------------------------------------
> || >>
> || >> ...only prints one line of 'Test' - I'd have thought it should print
> || >> out two
> || >> copies. BTW, I'm running under PHP 4.1.2 (and it's not mine to
> || >> change/upgrade!)
> || >
> || > You're close. But you have to use the global keyword in the global
> || > context, also. Not just in the function.
> ||
> || Umm, no you don't!
> ||
> |
>
http://uk.php.net/manual/en/language...s.scope.global
> ||
> || >
> || > global $variable;
> || >
> || > function printsomething()
> || > {
> || > global $variable;
> || >
> || > $variable = 'Test'.<b />;
> || > echo $variable;
> || > }
> || >
> || > printsomething();
> || > echo $variable;
> || >
> ||
> ||
> || --
> || Oli
> |
> |
> | Thanks, Oli
> | I'm getting the feeling, (although noone's spelling it out either here
or
> in
> | any of the myriad books I've looked at for inspiration), that declaring
a
> | variable as global inside a function will make it accessible outside the
> | function at the global scope; in other words, what I've done above is
> | declare two independent variables, the one outside the function
> over-riding
> | the effect of the one inside the function.. OK - I can test this very
> | quickly. But if so, how on earth do I get to access it within another
> | function, or does this automatically make it visible everywhere?
> | Of course, I could store the data within MySQL, thereby making it
> | persistent, but this seems like overkill. How does PHP make variables
> | accessible with 'real' global scope, not just 'global, except inside
> | functions', which for an old 'C' programmer like me, is not global at
all?
> | I know, in theory about superglobals but again, this seems like
overkill.
> | Or am I being silly?
> | Thanks,
> | Charles
> |
>
>
> Problem now solved (from the point of view of this specific query).
Thanks
> to Oli, Norm and Johnny for taking the trouble to reply.
> Regards,
> Charles
>

Of course, there's always the $_GLOBALS array...

Norm