PHP4 Sessions

Rick

hi all!
I can't get sessinos to work properly and hope someone can help.
This is a test I did, with a simple file, page.php.

page.php

<?php

session_register(visits);

// just to get a zero instead of a empty string
if(!$visits)
$visits = 0;

$visits++;

echo "<html><body bgcolor=\"green\">You have been here ".$visits." times.</body></html>";

and the output I get is always 1 (one visits even though I refresh the webpage). There is also a additional warning, here is the output I get:

<html><head></head><body bgcolor="green">You have been here 1 times.

Warning: Unknown(): Your script possibly relies on a session side-effect
which existed until PHP 4.2.3. Please be advised that the session extension
does not consider global variables as a source of data, unless register_globals
is enabled. You can disable this functionality and this warning by setting
session.bug_compat_42 or session.bug_compat_warn to off, respectively. in

Unknown on line 0 </body></html>

My register_globals is set to off, I'm uing PHP 4.3.0 and it's compiled for Linux/GNU Debian, probably quite much a standard installation.

I also have a few more problems that can be related, for example I never get any output from $PHP_SELF.

Any help and suggestions are appreciated!

/Rick

laserlight

To begin with, "visits" is a string literal, hence it must be placed in (double) quotes when passed as an argument.

Weedpacket

PHP has a much better way of handling session data, introduced in PHP4.1: here's the relevant chapter.

<?php
session_start();

if(!isset($_SESSION['visits']))
    $_SESSION['visits']=0;

$_SESSION['visits']++;
?>

What's got me especially worried is that Warning message (which you may or may not have actually read) that says you're cript is "Unknown", and that the error is on line "0". How are you trying to call it? (You do need to be using http to use sessions.)

dalecosp

Originally posted by Rick
hi all!

I also have a few more problems that can be related, for example I never get any output from $PHP_SELF.

Any help and suggestions are appreciated!

/Rick

Hi,

$PHP_SELF is a constant in the $SERVER superglobal array, hence:

echo $_SERVER['PHP_SELF'];