From: steven at acko dot net
Operating system: Windows 2000
PHP version: 5.0.0
PHP Bug Type: Strings related
Bug description: strip_tags silently strips out <!...> tags
Description:
------------
The strip_tags function is hardcoded to strip out <!...> tags, such as
comments.
It is IMO expected behaviour for the function that specifying "<!-->" or
"<!DOCTYPE>" in the allowed tags list leaves these intact.
If this is expected behaviour for this function, then the documentation
should be updated.
(PS: The state machine in php_strip_tags() in string.c seems to contain
some redundancies. Someone who understand all of it should take a closer
look ;))
Reproduce code:
---------------
<?php
print strip_tags("Some text. <!-- a comment --> Some text.", "<!-->");
?>
Expected result:
----------------
The output should be:
Some text. <!-- a comment --> Some text.
(with the comment intact)
Actual result:
--------------
The output is:
Some text. Some text.
(the comment is stripped out)
--
Edit bug report at http://bugs.php.net/?id=29198&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=29198&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=29198&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=29198&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=29198&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=29198&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=29198&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=29198&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=29198&r=support
Expected behavior: http://bugs.php.net/fix.php?id=29198&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=29198&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=29198&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=29198&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=29198&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=29198&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=29198&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=29198&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=29198&r=float
