filter_input

Gets variable from outside PHP and optionally filters it (PHP 5 >= 5.2.0, PECL filter:0.11.0)
mixed filter_input ( int type, string variable_name [, int filter [, mixed options]] )

Example 675. A filter_input() example

copy to clipboard

<?php

$search_html = filter_input(INPUT_GET, 'search', FILTER_SANITIZE_SPECIAL_CHARS);
$search_url = filter_input(INPUT_GET, 'search', FILTER_SANITIZE_ENCODED);

echo "You have searched for $search_html.\n";

echo "<a href='?search=$search_url'>Search again.</a>";
?>

The above example will output something similar to:

copy to clipboard

You have searched for Me &#38; son.

<a href='?search=Me%20%26%20son'>Search again.</a>

Code Examples / Notes » filter_input

anthony dot parsons

FastCGI seems to cause strange side-effects with unexpected null values when using INPUT_SERVER and INPUT_ENV with this function. You can use this code to see if it affects your server: <?php var_dump($_SERVER); foreach ( array_keys($_SERVER) as $b ) { var_dump($b, filter_input(INPUT_SERVER, $b)); } echo '<hr>'; var_dump($_ENV); foreach ( array_keys($_ENV) as $b ) { var_dump($b, filter_input(INPUT_ENV, $b)); } ?> If you want to be on the safe side, using the superglobal $_SERVER and $_ENV variables will always work. You can still use the filter_* functions for Get/Post/Cookie without a problem, which is the important part!

Change Language

filter_has_var
filter_id
filter_input_array
filter_input
filter_list
filter_var_array
filter_var

filter_input

Gets variable from outside PHP and optionally filters it (PHP 5 >= 5.2.0, PECL filter:0.11.0) mixed filter_input ( int type, string variable_name [, int filter [, mixed options]] )

Example 675. A filter_input() example

Code Examples / Notes » filter_input

Change Language

Gets variable from outside PHP and optionally filters it (PHP 5 >= 5.2.0, PECL filter:0.11.0)
mixed filter_input ( int type, string variable_name [, int filter [, mixed options]] )