ID: 36983
Updated by: [EMAIL PROTECTED]
Reported By: crisp at tweakers dot net
-Status: Open
+Status: Bogus
Bug Type: PCRE related
Operating System: all
PHP Version: 4.4.2
New Comment:
If there is a problem, it is PCRELib problem.
Please report it to PCRELib developers.
Previous Comments:
------------------------------------------------------------------------
[2006-04-05 12:41:15] crisp at tweakers dot net
Description:
------------
It seems that when PCRE needs to backtrack more than 20 characters in
order to evaluate an OR'ed expression the results of a preg_match_all
are incorrect/incomplete.
See below code as an example.
Reproduce code:
---------------
$foo = 'foo# bar# abcdefghijklmnopqrst bla#';
echo '$foo = ', $foo, "\n";
preg_match_all('/([a-y]|z)+#/', $foo, $matches1);
preg_match_all('/([a-y]+|z)+#/', $foo, $matches2);
print_r($matches1[0]);
print_r($matches2[0]);
$foo = 'foo# bar# abcdefghijklmnopqrstu bla#';
echo '$foo = ', $foo, "\n";
preg_match_all('/([a-y]|z)+#/', $foo, $matches1);
preg_match_all('/([a-y]+|z)+#/', $foo, $matches2);
print_r($matches1[0]);
print_r($matches2[0]);
Expected result:
----------------
both expressions for both strings should give the following output:
Array
(
[0] => foo#
[1] => bar#
[2] => bla#
)
Actual result:
--------------
The last expression gives the following output on the last string:
Array
(
[0] => foo#
[1] => bar#
)
The last match on bla# is missing in the result for the preg_match_all
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=36983&edit=1
