From: [EMAIL PROTECTED]
Operating system: Win NT 4
PHP version: 4.3.0
PHP Bug Type: Session related
Bug description: Session vars inappropriately created as references
It took me a while to track this down...
we noticed that when we upgraded a develpment box
from 4.2.3 to 4.3.0, that one of our session vars
was being over-written by another.
It turns out that one was being serialized
to the session as a reference to the other,
but only if the vars were intialized like this:
$var1 = $var2 = "some value";
Consider two scripts, test_bug1.php and test_bug2.php
If you run test_bug1, and then test_bug2, surprisingly,
the output of test_bug2 will be:
BEFORE:
var1 = 'INITIALIZED'
var2 = 'INITIALIZED'
AFTER:
var1 = 'CHANGED'
var2 = 'CHANGED'
<?php
// test_bug1.php
session_start();
$var1 = $var2 = "INITIALIZED";
session_register("var1","var2");
echo "INIT:<br>\n";
echo "var1 = '$var1'<br>";
echo "var2 = '$var2'<br><p>";
echo "<a href='test_bug2.php'>test_bug2.php</a>";
?>
<?php
// test_bug2.php
session_start();
echo "BEFORE:<br>\n";
echo "var1 = '$var1'<br>\n";
echo "var2 = '$var2'<br><p>\n";
$var2 = "CHANGED";
echo "AFTER:<br>\n";
echo "var1 = '$var1'<br>\n";
echo "var2 = '$var2'<br><p>\n";
$var2 = "EXIT";
?>
--
Edit bug report at http://bugs.php.net/?id=22117&edit=1
--
Try a CVS snapshot: http://bugs.php.net/fix.php?id=22117&r=trysnapshot
Fixed in CVS: http://bugs.php.net/fix.php?id=22117&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=22117&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=22117&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=22117&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=22117&r=support
Expected behavior: http://bugs.php.net/fix.php?id=22117&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=22117&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=22117&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=22117&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=22117&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=22117&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=22117&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=22117&r=gnused
