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PHP filter-SANITIZE_SPECIAL_CHARS Filter

PHP Filter Reference

Complete PHP Filter Reference

Definition and Usage

The filter-SANITIZE_SPECIAL_CHARS filter HTML-escapes special characters.

This filter is used to escape "<>& and characters with ASCII value below 32

Name: "special_chars"
ID-number: 515

Possible flags:

filter-FLAG_STRIP_LOW - Strip characters with ASCII value below 32
filter-FLAG_STRIP_HIGH - Strip characters with ASCII value above 32
filter-FLAG_ENCODE_HIGH - Encode characters with ASCII value above 32

Example

<?php
$url="Is Peter <smart> & funny?";

var_dump(filter-var($url,filter-SANITIZE_SPECIAL_CHARS));
?>

The browser output of the code above will be:

string(37) "Is Peter <smart> & funny?"

If you select "View source" in the browser window, you will see the following HTML:

string(37) "Is Peter <smart> & funny?"

PHP Filter Reference

Complete PHP Filter Reference

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