PHP5中文手册·Strip HTML and PHP tags from a string -- 追寻梦想＞编程乐园＞PHP 编程

说明

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.

参数

str: The input string.
allowable_tags: You can use the optional second parameter to specify tags which should not be stripped.

Note: HTML comments and PHP tags are also stripped. This is hardcoded and can not be changed with allowable_tags .

返回值

Returns the stripped string.

更新日志

版本	说明
5.0.0	strip_tags() is now binary safe
4.3.0	HTML comments are now always stripped
4.0.0	The `allowable_tags` parameter was added

范例

Example#1 strip_tags() example


<?php
$text = '<p>Test paragraph.</p><!-- Comment --> <a href="#fragment">Other text</a>';
echo strip_tags($text);
echo "\n";

// Allow <p> and <a>
echo strip_tags($text, '<p><a>');
?>

上例将输出：

Test paragraph. Other text
<p>Test paragraph.</p> <a href="#fragment">Other text</a>

注释

Warning

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

Warning

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.

参见

htmlspecialchars()