From: php at bucksvsbytes dot com
Operating system: Ubuntu
PHP version: 5.2.4
PHP Bug Type: Scripting Engine problem
Bug description: undesirable invalid argument in foreach
Description:
------------
In PHP4, foreach($array) runs without error if $array is an uninitialized
array. The foreach block is executed 0 times. This is consistent with other
0 iteration blocks such as while(false) and for($i=0;$i<0). In PHP5, an
inconsistency was introduced by throwing an "invalid argument" warning when
$array is an uninitialized array. In upgrading to PHP5 I had to add a
surrounding if($array) block to hundreds of foreach blocks to eliminate the
possible warning message.
Reproduce code:
---------------
unset($array);//just to clarify initial conditions
foreach($array['phone'] as $key=>$phone){
echo $phone.'<br/>';
}
Expected result:
----------------
I expect no errors and nothing echoed. This is PHP4 behavior.
Actual result:
--------------
In PHP5, following message pointlessly prints:
Warning: Invalid argument supplied for foreach() in ...
--
Edit bug report at http://bugs.php.net/?id=43072&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=43072&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=43072&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=43072&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=43072&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=43072&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=43072&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=43072&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=43072&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=43072&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=43072&r=support
Expected behavior: http://bugs.php.net/fix.php?id=43072&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=43072&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=43072&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=43072&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43072&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=43072&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=43072&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=43072&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=43072&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=43072&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=43072&r=mysqlcfg
