From:             alexey at gmail dot com
Operating system: linux
PHP version:      4.4.7
PHP Bug Type:     *General Issues
Bug description:  preg_match_all does not find all matches

Description:
------------
I am unable to upgrade to 4.4.7 at this point. I am using 4.4.6 but the
release notes did not include this problem as being fixed so I am reporting
it now.

The code tries to find all tags, but it finds only few of them after
spending a lot of CPU cycles. 



Reproduce code:
---------------
<?
$data = "

<HTML xmlns=\"http://www.w3.org/1999/xhtml\"; lang=\"en\">
<body>
<P>It's now possible to download whole Flash and WPF sites and run
them when you want. One example is the <EM>New York Times</EM> Reader,
for which I did some sketches, and which was reviewed on
TechnologyReview.com <EM>(see \"<A
href=http://www.technologyreview.com/Infotech/16760\"/>The </a> </em>
<a href=\"http://www.technologyreview.com/Infotech/16760/\";>Times </a>
<em> <a href=\"http://www.technologyreview.com/Infotech/16760/\";>
Emulates Print on the Web</a>,


</BODY>
</HTML>
";


preg_match_all("#</?([[:alpha:]]+)[[:space:]]*([^\">]*|(\"[^\">]*\"))*>#",
$data, $matches, PREG_OFFSET_CAPTURE);

print_r($matches[0]);


?>



Expected result:
----------------
It should include the following tags but it does not:


    [5] => Array
        (
            [0] => </a>
            [1] => 350
        )

    [6] => Array
        (
            [0] => </em>
            [1] => 355
        )

    [7] => Array
        (
            [0] => </a>
            [1] => 425
        )

    [8] => Array
        (
            [0] => <em>
            [1] => 430
        )

    [9] => Array
        (
            [0] => </a>
            [1] => 519
        )

    [10] => Array
        (
            [0] => </BODY>
            [1] => 527
        )

    [11] => Array
        (
            [0] => </HTML>
            [1] => 535
        )


Actual result:
--------------
    [0] => Array
        (
            [0] => <HTML xmlns="http://www.w3.org/1999/xhtml"; lang="en">
            [1] => 2
        )

    [1] => Array
        (
            [0] => <body>
            [1] => 56
        )

    [2] => Array
        (
            [0] => <P>
            [1] => 63
        )

    [3] => Array
        (
            [0] => <EM>
            [1] => 169
        )

    [4] => Array
        (
            [0] => </EM>
            [1] => 187
        )

    [5] => Array
        (
            [0] => <EM>
            [1] => 279
        )



-- 
Edit bug report at http://bugs.php.net/?id=41385&edit=1
-- 
Try a CVS snapshot (PHP 4.4): 
http://bugs.php.net/fix.php?id=41385&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): 
http://bugs.php.net/fix.php?id=41385&r=trysnapshot52
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=41385&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=41385&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=41385&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=41385&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=41385&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=41385&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=41385&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=41385&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=41385&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=41385&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=41385&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=41385&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=41385&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=41385&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=41385&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=41385&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=41385&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=41385&r=mysqlcfg

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