Edit report at http://bugs.php.net/bug.php?id=53825&edit=1
ID: 53825
User updated by: mikhail dot v dot gavrilov at gmail dot com
Reported by: mikhail dot v dot gavrilov at gmail dot com
Summary: incorrect result preg_replace with large strings
Status: Bogus
Type: Bug
Package: PCRE related
Operating System: Ubuntu 10.10
PHP Version: 5.3.5
Block user comment: N
Private report: N
New Comment:
Probably a rhetorical question and no response will not. Why not make an
exception for this case? Who does not know would see right away the
error, the
others would put try {} catch {}.
Previous Comments:
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[2011-01-23 22:46:28] [email protected]
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php
Check out what preg_last_error() has returned to figure out why PCRE lib
has failed.
You need to increase the pcre.backtrack_limit value.
e.g. ini_set('pcre.backtrack_limit', PHP_INT_MAX);
- http://docs.php.net/manual/en/pcre.configuration.php
- http://docs.php.net/manual/en/function.preg-last-error.php
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[2011-01-23 21:28:19] mikhail dot v dot gavrilov at gmail dot com
Description:
------------
While converting phpBB code to html, preg_replace return empty string.
Test case:
<?php
$str = '[b]';
// Please try run this test case also with $i<99997 and compare
result's
for ($i=0; $i<99998; $i++) $str .= 'q';
$str = preg_replace("#\[b\](.+?)\[\/b\]#is", "[p]", $str);
echo $str;
?>
I know about pcre.backtrack_limit, but i think in this case PCRE must
generate
exception with fatal error.
Test script:
---------------
<?php
$str = '[b]';
// Please try run this test case also with $i<99997 and compare
result's
for ($i=0; $i<99998; $i++) $str .= 'q';
$str = preg_replace("#\[b\](.+?)\[\/b\]#is", "[p]", $str);
echo $str;
?>
Expected result:
----------------
Return non empty string or generate exception with fatal error
Actual result:
--------------
Empty string
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/bug.php?id=53825&edit=1
