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Strip HTML or XML tags from a string with Perl like PHP's strip_tags() does
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hinnerk-a/perl-strip_tags
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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: * HTML::StripTags Homepage <http://www.hinnerk-altenburg.de/perl-strip_tags/> * Code Repository on GitHub <http://github.com/hinnerk-a/perl-strip_tags> * GitHub Issue Tracker <http://github.com/hinnerk-a/perl-strip_tags/issues> * AnnoCPAN: Annotated CPAN documentation <http://annocpan.org/dist/HTML-StripTags> * CPAN Ratings <http://cpanratings.perl.org/d/HTML-StripTags> * Search CPAN <http://search.cpan.org/dist/HTML-StripTags> 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
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