From: jimriver76 at yahoo dot co dot uk
Operating system: windows server 2003
PHP version: 5.2.9
PHP Bug Type: PCRE related
Bug description: periodically "Nesting level too deep - recursive depende"
Description:
------------
Since Feb 2009, all php scripts in my server suddently and selectively
produced an curious error message in php log as following:
[code]
[16-Apr-2009 22:03:00] PHP Fatal error: Nesting level too deep -
recursive dependency? in D:\websites\nameclub\include\common.inc.php on
line 56
[/code]
This proplem continued even after I upgrade to the current 5.2.9 version.
After checking all those lines of code, I found some similarities of that
issue. They always caused by preg_replace or preg_match:
[code]
$boardurl =
'http://'.$_SERVER['HTTP_HOST'].preg_replace("/\/+(api|archiver|wap)?\/*$/i",
'', substr($PHP_SELF, 0, strrpos($PHP_SELF, '/'))).'/';
[/code]
[code]
// $cip = 124.227.153.46
preg_match("/[\d\.]{7,15}/", $cip, $cips);
[/code]
Another curious characteristic is that it dosen't happen always. Instead,
it ran into this problem only at a 1/3 chance. Normally, after I refleshed
the same page, it worked just fine. That is why I believe it should be
reported as a bug.
Btw, I could provide some help if one of you ever have this kind of
problem. The way I 'fixed' it is uncomment the pcre.recursion_limit line
;pcre.recursion_limit=100000
I don't know why but it just fixed the issue perfectly for me.
Yes I search a lot by the 'Nesting level too deep' keywords, but found
none of them related to pcre extension, which I believe that mine has
connection with.
Reproduce code:
---------------
$boardurl =
'http://'.$_SERVER['HTTP_HOST'].preg_replace("/\/+(api|archiver|wap)?\/*$/i",
'', substr($PHP_SELF, 0, strrpos($PHP_SELF, '/'))).'/';
...
// $cip = 124.227.153.46
preg_match("/[\d\.]{7,15}/", $cip, $cips);
Expected result:
----------------
null
--
Edit bug report at http://bugs.php.net/?id=47989&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=47989&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=47989&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=47989&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=47989&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=47989&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=47989&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=47989&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=47989&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=47989&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=47989&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=47989&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=47989&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=47989&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=47989&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=47989&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=47989&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=47989&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=47989&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=47989&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=47989&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=47989&r=mysqlcfg
