filter_input
(PHP 5 >= 5.2.0, PECL filter:0.11.0)
filter_input — Gets variable from outside PHP and optionally filters it
Popis
Parametre
- type
-
One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, INPUT_ENV, INPUT_SESSION (not implemented yet) and INPUT_REQUEST (not implemented yet).
- variable_name
-
Name of a variable to get.
- filter
-
Filter to apply. Defaults to FILTER_DEFAULT.
- options
-
Associative array of options or bitwise disjunction of flags. If filter accepts options, flags can be provided in "flags" field of array.
Vrátené hodnoty
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.
Príklady
Example#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>";
?>
Výstup horeuvedeného príkladu bude niečo podobné tomuto:
You have searched for Me & son. <a href='?search=Me%20%26%20son'>Search again.</a>