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strip_tags
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strip_tags

Name

strip_tags — Strips angle-bracket delimited text from a string.

Synopsis

string strip_tags(string[, allowable_tags]); string string: String to be stripped string allowable_tags (optional): List of angle-bracket delimited tag names

Returns

String

Description

strip_tags() removes all angle-bracket delimited substrings from a string. This includes HTML, PHP, SGML, XHTML, and XML tags.

A list of optional tag names to ignore can be specified using the optional allowable_tags parameter. The tag names should be enclosed in angle brackets; for example, "".

Version

PHP 3.0.8, PHP 4.0b2+

Example

Example 1222. Strip tags from potentially malicious (or incompetent :) input

<?php
$text = <<<_HTML_
<meta http-equiv="refresh" content="0;URL=http://some.naughty.site.example.com/">
I <b><i>love</i></b> forums that don't filter the HTML tags that they allow to be posted!
_HTML_;

echo strip_tags($text, '<b><i><em><strong>');
?>

Output:
I <b><i>love</i></b> forums that don't filter the HTML tags that they allow to be posted!

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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.