From: levi at alliancesoftware dot com dot au
Operating system:
PHP version: 5.0.5
PHP Bug Type: Scripting Engine problem
Bug description: Divide by zero error messages during parsing
Description:
------------
If you have a divide by zero constant, the initial syntax check parsing
catches it as an error even if the code is never executed.
A consequence of this is that error_reporting() and
set_ini('display_errors'..) are ignored since the error is triggeed before
the php code is exectued.
This in itself is not neccessarily a bug since you shouldn't have a
constant divide by zero, but the error report doesn't tell you the file it
came from (says unknown at line 0): this can be very frustrating if you
have a large number of include() files).
Setting display_error=0 in the .ini file is also ignored if
error_reporting is on
Reproduce code:
---------------
#!/usr/local/bin/php
<?
if (0) $x = 5 / 0;
?>
Expected result:
----------------
File runs
or, if (error_reporting | E_WARNING) && display_errors
PHP Warning: Division by zero in test.php on line 3
Actual result:
--------------
if (error_reporting | E_WARNING) and display_errors==0
[stderr:]
PHP Warning: Division by zero in Unknown on line 0
if (error_reporting | E_WARNING) and display_errors==1
[stderr:]
PHP Warning: Division by zero in Unknown on line 0
[stdout:]
<br />
<b>Warning</b>: Division by zero in <b>Unknown</b> on line <b>0</b><br
/>
[ yes, the error is reported twice ]
if (error_reporting == 0)
[ No output ]
--
Edit bug report at http://bugs.php.net/?id=34507&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=34507&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=34507&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=34507&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=34507&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=34507&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=34507&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=34507&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=34507&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=34507&r=support
Expected behavior: http://bugs.php.net/fix.php?id=34507&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=34507&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=34507&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=34507&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=34507&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=34507&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=34507&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=34507&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=34507&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=34507&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=34507&r=mysqlcfg
