PHP FILTERS ADVANCED

PHP FILTERS ADVANCED

• PHP filters also come with several advanced options that can be used to customize their behavior
• Some of the most commonly used options include Flag options.
• These options are used to modify the behavior of the filter, such as requiring a specific type of data or allowing multiple options. 

TYPES OF FILTERS IN PHP :

    👉high-pass

    👉low-pass

    👉band-pass

    👉band-reject 

EXAMPLE FOR FILTERS ADVANCED IN PHP :

<?php
$str = "<h1>Hello Kitty!</h1>";
$newstr = filter_var($str, FILTER_SANITIZE_STRING,
FILTER_FLAG_STRIP_HIGH);
echo $newstr ;
?>

OUTPUT :

Hello Kitty!