How to use filter id in PHP

This article describe about filter_id() function in PHP.
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filter_id() function

ID number return of a specified filter by the filter_id() function.

On success return the filter ID number, and if filter doesn't exits return NULL.

Syntax

filter_id (filter_name)

 

Parameter Description
filter_name Required. Define the filter for get the id.

Example

<html>
<body>
<?php
echo(filter_id("validate_email"));
?>
</body>
</html>

 

Output

pic2.jpg

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