From: jcampbell at remindermedia dot com
Operating system: Fedora Core 12
PHP version: 5.3.1
PHP Bug Type: Arrays related
Bug description: Warning When Handling Exception in a usort Callback Function
Description:
------------
If the callback function used by usort handles an exception using a
try/catch block, a warning is generated. The correct sorting is still done.
This happens even when the exception & handling doesn't involve the
variables.
The example below is the usort example from the manual with only the
try/catch block added. Reproducible in PHP 5.2.11 but not 5.2.9
Reproduce code:
---------------
<?php
function cmp($a, $b)
{
if ($a == $b) {
return 0;
}
try {
throw new Exception();
} catch (Exception $E) {
}
return ($a < $b) ? -1 : 1;
}
$a = array(3, 2, 5, 6, 1);
usort($a, "cmp");
Expected result:
----------------
No warning message.
Actual result:
--------------
PHP Warning: usort(): Array was modified by the user comparison function
in /home/jcampbell/usortExceptionWarning.php on line 19
--
Edit bug report at http://bugs.php.net/?id=50688&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=50688&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=50688&r=trysnapshot53
Try a snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=50688&r=trysnapshot60
Fixed in SVN:
http://bugs.php.net/fix.php?id=50688&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=50688&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=50688&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=50688&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=50688&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=50688&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=50688&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=50688&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=50688&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=50688&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=50688&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=50688&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=50688&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=50688&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=50688&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=50688&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=50688&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=50688&r=mysqlcfg
