ID: 42649
User updated by: stronk7 at moodle dot org
Reported By: stronk7 at moodle dot org
Status: Open
Bug Type: PCRE related
Operating System: potentially any
PHP Version: 5.2.4
New Comment:
UHm...
It seems that, since 5.2.0 it's necessary to adjust the
"pcre.backtrack_limit' setting to allow more chars to be returned (in
ungreedy matches). So, something like:
ini_set('pcre.backtrack_limit', 20971520); /// 20 MB
will allow up to 20MB of text to be matched.
Radical change (without notices?) from previous versions...uhm.
Ciao :-)
Previous Comments:
------------------------------------------------------------------------
[2007-09-13 00:17:44] stronk7 at moodle dot org
Description:
------------
Trying to capture more than 99998 bytes from one string captures
nothing. Same behavior happens also in other PCRE functions.
You can see more test results in the original place where was reported:
http://tracker.moodle.org/browse/MDL-11237
Reproduce code:
---------------
<?php
/// Change this if you want, but 99999 is the limit in my system
(Darwin mbp 8.10.1)
$numchars = 99999;
/// Test begins here
echo 'PHP: ' . phpversion() . '<br />';
echo 'OS: ' . php_uname() . '<br />';
$all = '';
for($i=0; $i<$numchars-2; $i++) {
$all .= 'x';
}
$all = '@' . $all . '@';
preg_match_all('/@(.*?)@/is', $all, $results);
if ($results[0]) {
echo 'OK, preg_match_all() has been able to capture one text of
' . strlen($results[0][0]) . ' bytes.<br />';
} else {
echo 'ERROR, preg_match_all() has NOT been able to capture one
text of ' . strlen($all) . ' bytes.<br />';
}
?>
Expected result:
----------------
It should show:
OK, preg_match_all() has been able to capture one text of 99999 bytes
Actual result:
--------------
ERROR, preg_match_all() has NOT been able to capture one text of 99999
bytes
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=42649&edit=1
