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Posted by Jerry Stuckle on 09/26/06 21:07
Charles O'Flynn wrote:
> "Johnny" <removethis.huuanito@hotmail.com> wrote in message
> news:lsfSg.375$UJ2.143@fed1read07...
> |
> | "Charles O'Flynn" <charles@matchwalk.com> wrote in message
> | news:12hivk1109pj1e0@corp.supernews.com...
> | > As a complete newcomer (2-3 days) to PHP, although not to programming in
> | > general, I have 'dived in' to start a small project to read and parse an
> | XML
> | > data stream. I have already worked out most of the more specialist
> | aspects
> | > of the job but am now completely stuck on something I would have thought
> | > were simplicity itself...
> | > I need to have a large number of global variables visible inside
> | functions -
> | > it's not possible to pass them into the functions themselves, since
> | although
> | > they are user functions, the parameter type/count is fixed. Reading
> what
> | > information I can find, I was under the impression that variables
> declared
> | > at the head of the PHP block as 'global' would be visible inside all
> | > functions. My problem is this: yes, it appears I can assign values to
> | > these global variables inside a function, (I think), but immediately I
> | exit
> | > the function, the data is lost. At first sight, I could be assigning
> | values
> | > to variables with identical names but local scope within the functions,
> | but
> | > when I performed an 'explode()' inside a function, assigning the result
> to
> | > one of my 'global' variables and then, on exiting the function, tried to
> | > 'echo' the result, the result was 'ARRAY' - the original global variable
> | had
> | > presumably been converted, since it started life as a scalar.
> | > I don't really want to go to superglobals unless I have to - can anybody
> | > please tell me where I'm going so obviously wrong and how I can correct
> | it?
> | > This is such a basic problem, I can't help thinking everybody must know
> | the
> | > answer...
> | > Thanks for any help/advice offered.
> | >
> | >
> |
> | just need to use the global keyword when inside the function, it's
> explained
> | here:
> | http://us3.php.net/global
> |
> 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!)
> Thanks and regards,
> Charles
>
>
You're close. But you have to use the global keyword in the global
context, also. Not just in the function.
global $variable;
function printsomething()
{
global $variable;
$variable = 'Test'.<b />;
echo $variable;
}
printsomething();
echo $variable;
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================
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