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filter_list> <filter_input_array
Last updated: Fri, 06 Nov 2009

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filter_input

(PHP 5 >= 5.2.0)

filter_inputObtem a específica variável externa pelo nome e opcionalmente a filtra

Descrição

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

Parâmetros

type

Um dos INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, INPUT_ENV, INPUT_SESSION (não implementado ainda) e INPUT_REQUEST (não implementado ainda).

variable_name

Nome da variável a ser obtida.

filter

Filtro a ser aplicado. O padrão é FILTER_DEFAULT.

options

Array associativo de opções ou disjunção com operação binário dos flags. Se o filtro aceita opções, flags podem ser providas no campo "flags" da array.

Valor Retornado

Valor da requisitada variável em caso de sucesso, FALSE se o filtro falhar, ou NULL se o parâmetro variable_name é um variável não definida. Se a flag FILTER_NULL_ON_FAILURE é usada, ela retorna FALSE se a variável não é definida e NULL se o filtro falhar.

Exemplos

Exemplo #1 Um exemplo da filter_input()

<?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>";
?>

O exemplo acima irá imprimir algo similar a:

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

Veja Também



filter_list> <filter_input_array
Last updated: Fri, 06 Nov 2009
 
add a note add a note User Contributed Notes
filter_input
Maksym Karazeev
03-Mar-2009 09:13
Just a tip.

Note how to setup default filter for filter_var_array

When I tried to use filter_var_array and didn't mentioned all array indexes in definition it filtered it with some filter and broke values so using this tip corrected everything

<?php
$def
= array_map(create_function('', 'return array("filter"=>FILTER_UNSAFE_RAW);'), $input);
?>
Marques Johansson
02-Jan-2008 07:30
Despite the documentation for 'type', you can specify multiple types by doing:

$test = filter_input(INPUT_GET | INPUT_POST, 'test');

This was tested in 5.2.3.

When both are set it appears to return the value defined first by variables_order (php.ini).

This trick does not seem to work in filter_input_array though.  Neither function supports INPUT_REQUEST at the moment.
vid at phpcult dot com
10-Dec-2007 08:49
If you want to use the callback filter with filter_input, you need to do something like:

$args = array ('options' => 'mycallbackfunction');

$foobar = filter_input(INPUT_POST,'postedvariable',FILTER_CALLBACK,$args);
anthony dot parsons at manx dot net
23-Aug-2007 09:10
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!

filter_list> <filter_input_array
Last updated: Fri, 06 Nov 2009
 
 
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