Filter Funkcje
PHP Manual

filter_input

(PHP 5 >= 5.2.0)

filter_inputGets a specific external variable by name and optionally filters it

Opis

mixed filter_input ( int $type , string $variable_name [, int $filter = FILTER_DEFAULT [, mixed $options ]] )

Parametry

type

One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, or INPUT_ENV.

variable_name

Name of a variable to get.

filter

The ID of the filter to apply. The Types of filters manual page lists the available filters.

options

Associative array of options or bitwise disjunction of flags. If filter accepts options, flags can be provided in "flags" field of array.

Zwracane wartości

Value of the requested variable on success, FALSE if the filter fails, or NULL if the variable_name variable is not set. If the flag FILTER_NULL_ON_FAILURE is used, it returns FALSE if the variable is not set and NULL if the filter fails.

Przykłady

Przykład #1 A filter_input() example

<?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>";
?>

Powyższy przykład wyświetli coś podobnego do:

You have searched for Me &#38; son.
<a href='?search=Me%20%26%20son'>Search again.</a>

Zobacz też:


Filter Funkcje
PHP Manual