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. This is hardcoded and can not be changed with allowable_tags.

警示

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

警示

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.

例子 1. strip_tags() example
<?php $text = 'Test paragraph. Other text'; echo strip_tags($text); echo "\n"; // Allow echo strip_tags($text, ''); ?>
上例將輸出：
Test paragraph. Other text Test paragraph. Other text

strip_tags() has been binary safe since PHP 5.0.0