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Re: simple session question [message #175704 is a reply to message #175700] Fri, 21 October 2011 23:06 Go to previous messageGo to previous message
Jerry Stuckle is currently offline  Jerry Stuckle
Messages: 2598
Registered: September 2010
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On 10/21/2011 5:43 PM, h wrote:
> On Oct 21, 11:19 am, Thomas Mlynarczyk<tho...@mlynarczyk-
> webdesign.de> wrote:
>> cerr schrieb:
>>
>>> if(!isset($_SESSION['stp'])) {
>>> session_start();
>>> $_SESSION['stp'] = 0;
>>> echo "session started<br>\n";
>>> }
>>
>> You need to call session_start() on *every* page request, not just when
>> you initialize the session (think of it as
>> "session_start_or_continue()"). The $_SESSION superglobal does not exist
>> until you have called session_start(), so your code above won't work.
>>
>>> switch($_SESSION['stp']) {
>>> case 0: $_SESSION['stp'] = $_SESSION['stp']++;
>>> echo "stp:".$_SESSION['stp'];
>>> break;
>>> case 1: $_SESSION['stp'] = $_SESSION['stp']++;
>>> echo "stp:".$_SESSION['stp'];
>>> break;
>>> case 2: $_SESSION['stp'] = $_SESSION['stp']++;
>>> echo "stp:".$_SESSION['stp'];
>>> $_SESSION['stp'] = 0;
>>> break;
>>
>> You're missing a } here. But even with that and the session_start()
>> issue fixed, it always prints 0. I'm not quite sure why, but anyway your
>> code is unnecessarily complicated. Here's my version:
>>
>> session_start();
>> if ( !isset( $_SESSION['stp'] ) )
>> {
>> $_SESSION['stp'] = 0;
>> echo "session started<br>\n";
>>
>> }
>>
>> echo $_SESSION['stp'];
>> $_SESSION['stp'] = ( $_SESSION['stp'] + 1 ) % 3;
>>
>> I use the modulo operator % to achieve the cycling through the values 0,
>> 1, 2.
>>
>
> Weird, my phpinfo() says: "Session Support enabled"
> but even with code like this
> <?php
> session_start();
> echo ++$_SESSION['test'];
> ?>
> just prints "session_start(); 1" - and i'm wondering why it's printing
> session_start(); in the browser, seems like it doesn't know this
> command...? Weird, any clues...?
>
> Thanks alot!
> Ron

That's because the code you posted is not what you have in your script.

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Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
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