(PHP 5 >= 5.2.0, PHP 7)
filter_input — Gets a specific external variable by name and optionally filters it
type
One of INPUT_GET, INPUT_POST,
INPUT_COOKIE, INPUT_SERVER, or
INPUT_ENV.
variable_nameName of a variable to get.
filterIdentificatorul ID al filtrului ce va fi aplicat. Pagina manualului pentru Types of filters afișează filtrele disponibile.
Dacă parametrul este omis, se va utiliza FILTER_DEFAULT,
ceea ce este echivalent cu
FILTER_UNSAFE_RAW.
Aceasta va duce la neaplicarea filtrării în mod implicit.
optionsAssociative array of options or bitwise disjunction of flags. If filter accepts options, flags can be provided in "flags" field of array.
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.
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>";
?>
Exemplul de mai sus va afișa ceva similar cu:
You have searched for Me & son. <a href='?search=Me%20%26%20son'>Search again.</a>