strip_tags

Description

string strip_tags ( string str [, string allowable_tags])

This function tries to return a string with all HTML and PHP tags stripped from a given str. It uses the same tag stripping state machine as the fgetss() function.

You can use the optional second parameter to specify tags which should not be stripped.

注: allowable_tags was added in PHP 3.0.13 and PHP 4.0b3. Since PHP 4.3.0, HTML comments are also stripped.

警告

Because strip_tags() does not actually validate the HTML, partial, or broken tags can result in the removal of more text/data than expected.

例子 1. strip_tags() example
<?php $text = ' Test paragraph.  Other text'; echo strip_tags($text); echo "\n\n-------\n"; // allow echo strip_tags($text, ''); ?>
The above example will output:
Test paragraph. Other text ------- Test paragraph. Other text

警告

This function does not modify any attributes on the tags that you allow using allowable_tags, including the style and onmouseover attributes that a mischievous user may abuse when posting text that will be shown to other users.