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HTML-StripTags-1.01
River stage zero No dependents
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/ HTML::StripTags

NAME

HTML::StripTags - Strip HTML or XML tags from a string with Perl like PHP's strip_tags() does

SYNOPSIS

 use HTML::StripTags qw(strip_tags);

 $string       = '<html>Hallo <u>beautiful</u> <a href="http://worldonline.com">world</a>!</html>';
 $allowed_tags = '<u><b>';

 print strip_tags( $string, $allowed_tags );

DESCRIPTION

HTML::StripTags provides the function strip_tags() that can strip all HTML or XML tags from a string except the given allowed tags. This is a Perl port of the PHP function strip_tags() based on PHP 5.3.3.

SECURITY NOTE

Please note: As per http://htmlpurifier.org/comparison#striptags PHP's strip_tags() is a very basic and unsafe method, so it's strongly recommended not to use it for cleaning up user input! As HTML::StripTags uses the same state machine, the same applies to this module.

METHODS

strip_tags()

A simple little state-machine to strip out html and php tags

State 0 is the output state, state 1 means we are inside a normal html tag, state 2 means we are inside a php tag, state 3 means we are inside a "<!--", case 4 means we are inside the following JavaScript/CSS/etc. tag.

When an allow string is passed in we keep track of the string in state 1 and when the tag is closed check it against the allow string to see if we should allow it.

 print strip_tags( $string, "<u><b><?php<?" );

 print strip_tags( $string, ('<u>', '<b>', '<?php', '<?') );

TODO

Pass in state variable to allow a function like fgetss() to maintain state across calls to the function.
Implement fgetss().

BUGS

Please report any bugs or feature requests to <hinnerk at cpan.org>, or through the GitHub web interface at http://github.com/hinnerk-a/perl-strip_tags/issues. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT

You can find documentation for this module with the perldoc command.

    perldoc HTML::StripTags

You can also look for information at:

AUTHOR

Hinnerk Altenburg, <hinnerk at cpan.org> http://www.hinnerk-altenburg.de/

COPYRIGHT & LICENSE

Copyright (C) 2011 by Hinnerk Altenburg <hinnerk at cpan.org> http://www.hinnerk-altenburg.de/.

This file is part of HTML::StripTags.

HTML::StripTags is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

Terms of the Perl programming language system itself

a) the GNU General Public License "perlgpl" as published by the Free Software Foundation; either version 1, or (at your option) any later version, or

b) the "Artistic License" "perlartistic"" which comes with this Kit.

SEE ALSO

HTML::Strip, "How do I remove HTML from a string?" in perlfaq9, HTML::Parser