Several ways to filter all HTML tags in PHP

Use regular filter HTML tags

The code is as follows	Copy Code
$html _body = "<a href= ' >www.111cn.net</a>"; Preg_replace ("/(</?) (w+) ([^>]*>)/e ", "' \1 '. Strtoupper (' \2 ')." \3 ' ", $html _body);

Using PHP tutorial with function strip_tags

The code is as follows	Copy Code
echo strip_tags ("Hello <b>world!www.111cn.net</b>");

User-defined

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function filterhtml ($STR) { $str =eregi_replace ("</*[^<>]*>", "", $str); $str =str_replace ("", ", $str); $str =str_replace ("", ", $str); $str =str_replace ("", ", $str); $str =str_replace ("::", ': ', $str); $str =str_replace ("", ", $str); $str =str_replace ("&nbsp;", "", $str); return $str; }

Other ways that might be useful to you

1, filter the regular expression of all HTML tags:

The code is as follows	Copy Code
</? [^>]+>

2, a regular expression that filters the properties of all HTML tags:

The code is as follows	Copy Code
$html = Preg_replace ("/<" ([a-za-z]+) [^>]*>/"," <\1> ", $html);

3, filter some of the HTML tags of the regular expression of the exclusion (such as excluding <p>, that is, do not filter <p>):

The code is as follows	Copy Code
</? [^pp/>]+>

4, filter some of the HTML tags of the regular expression of the enumeration (such as the need to filter <a><p><b>, etc.):

The code is as follows	Copy Code
</? [AAPPBB] [^>]*>

5, filter the exclusion of regular expressions for the properties of some HTML tags (such as excluding the ALT attribute, which does not filter the ALT attribute):

The code is as follows	Copy Code
S (?!) ALT) [a-za-z]+=[^s]*

6, the enumeration of regular expressions that filters the properties of some HTML tags (for example, the ALT attribute):

The code is as follows	Copy Code
(s) alt=[^s]*