From:             admin at rcczone dot com
Operating system: Linux / Apache
PHP version:      4.4.2
PHP Bug Type:     Strings related
Bug description:  strip_tags selectively strips allowed_tags

Description:
------------
For some reason beyond my knowledge, the strip_tags function is
selectively stripping allowed_tags. I have tested it against three
relatively similar strings (all <embed> tags) and it passing on only one
out of the three. The string and xhtml tags themselves are perfectly
valid, and I have no clue why strip_tags is behaving in such a way.

Reproduce code:
---------------
echo strip_tags('<embed allowScriptAccess="never"  
src="http://www.picturetrail.com/photoFlick/l_bookhorizontal.swf";
name="photoFlick"
FlashVars="img1=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756363.jpg&img2=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756370.jpg&img3=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756373.jpg&img4=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756375.jpg&img5=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756377.jpg&img6=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756379.jpg&img7=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756381.jpg&img8=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756384.jpg&img9=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756386.jpg&img10=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756388.jpg&img11=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756391.jpg&img12=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756394.jpg&img13=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/!
 
139756395.jpg&img14=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756397.jpg";
loop="false" menu="false" quality="high" bgcolor="..ffffff" width="600"
height="410" align="middle" allowScriptAccess="never"
type="application/x-shockwave-flash"
pluginspage="http://www.macromedia.com/go/getflashplayer";></embed>','<embed>');

Expected result:
----------------
<embed allowScriptAccess="never"  
src="http://www.picturetrail.com/photoFlick/l_bookhorizontal.swf";
name="photoFlick"
FlashVars="img1=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756363.jpg&img2=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756370.jpg&img3=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756373.jpg&img4=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756375.jpg&img5=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756377.jpg&img6=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756379.jpg&img7=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756381.jpg&img8=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756384.jpg&img9=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756386.jpg&img10=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756388.jpg&img11=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756391.jpg&img12=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756394.jpg&img13=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/!
 
139756395.jpg&img14=http://pic20.picturetrail.com:80/VOL1204/4617287/9809076/139756397.jpg";
loop="false" menu="false" quality="high" bgcolor="..ffffff" width="600"
height="410" align="middle" allowScriptAccess="never"
type="application/x-shockwave-flash"
pluginspage="http://www.macromedia.com/go/getflashplayer";></embed>

Actual result:
--------------
</embed>

-- 
Edit bug report at http://bugs.php.net/?id=37898&edit=1
-- 
Try a CVS snapshot (PHP 4.4): 
http://bugs.php.net/fix.php?id=37898&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): 
http://bugs.php.net/fix.php?id=37898&r=trysnapshot52
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=37898&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=37898&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=37898&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=37898&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=37898&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=37898&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=37898&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=37898&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=37898&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=37898&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=37898&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=37898&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=37898&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=37898&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=37898&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=37898&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=37898&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=37898&r=mysqlcfg

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