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Filter all HTML tag properties in PHP

Source: Internet
Author: User
Keywords Web Programming PHP Tutorials
Tags expression html php programming web
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1, filter the regular expression of all HTML tags:

</? [^>]+>

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

$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>):

</? [^pp/>]+>

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

</? [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):

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):

(s) alt=[^s]*

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