$_REQUEST

$_REQUESTVariáveis de requisição HTTP

Descrição

Um array associativo que por padrão contém informações de $_GET, $_POST e $_COOKIE.

Notas

Nota:

Esta é uma 'superglobal', ou variável global automática. Isto significa que ela está disponível em todos escopos pelo script. Não há necessidade de fazer global $variable; para acessá-la dentro de uma função ou método.

Nota:

Quando executando em linha de comando , esta não incluirá as entradas argv e argc; estas estão presentes no array $_SERVER.

Nota:

As variáveis em $_REQUEST são providas para o script via mecanismos de entradas GET, POST, e COOKIE e portando poderia ser modificadas por um usuário remoto e não podem ser confiadas. A presença e ordem das variáveis listadas neste array é definido de acordo com o PHP request_order, e variables_order diretivas de configuração

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User Contributed Notes 5 notes

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187
strata_ranger at hotmail dot com
14 years ago
Don't forget, because $_REQUEST is a different variable than $_GET and $_POST, it is treated as such in PHP -- modifying $_GET or $_POST elements at runtime will not affect the ellements in $_REQUEST, nor vice versa.

e.g:

<?php

$_GET
['foo'] = 'a';
$_POST['bar'] = 'b';
var_dump($_GET); // Element 'foo' is string(1) "a"
var_dump($_POST); // Element 'bar' is string(1) "b"
var_dump($_REQUEST); // Does not contain elements 'foo' or 'bar'

?>

If you want to evaluate $_GET and $_POST variables by a single token without including $_COOKIE in the mix, use  $_SERVER['REQUEST_METHOD'] to identify the method used and set up a switch block accordingly, e.g:

<?php

switch($_SERVER['REQUEST_METHOD'])
{
case
'GET': $the_request = &$_GET; break;
case
'POST': $the_request = &$_POST; break;
.
.
// Etc.
.
default:
}
?>
up
15
mike o.
12 years ago
The default php.ini on your system as of in PHP 5.3.0 may exclude cookies from $_REQUEST.  The request_order ini directive specifies what goes in the $_REQUEST array; if that does not exist, then the variables_order directive does.  Your distribution's php.ini may exclude cookies by default, so beware.
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3
codeblog.pro
1 year ago
In PHP version 7.0 with the default settings.+, $_REQUEST array does not contain cookies.
up
7
Luke Madhanga
6 years ago
To access $_POST, $_GET, etc, use the function filter_input(TYPE, varname, filter) to ensure that your data is clean.

Also, I was brought up to believe that modifying superglobals is a BAD idea. I stand by this belief and would recommend you do too
up
-18
Filomena
1 year ago
Warning:

The way $_REQUEST is populated by default can lead to strange bugs because of the unfortunate default setting of the configuration directive 'variables_order'.

Example: In an e-shop you want to display prices based on user preference. User can either switch the currency or the previous selection is used. By defaut, the following code WILL NOT WORK as expected:

<?php
if ($_REQUEST['currency']) # change currency on user request
{
   
$currency = $_REQUEST['currency']; # use it
   
setcookie('currency', $_REQUEST['currency'], 0, 'eshop.php'); # store it
}
else
# use default currency
{
   
$currency = 'USD';
}

# display shop contents with user selected currency
echo 'All prices are shown in ', $currency;

# let the user switch currency
echo '<a href="eshop.php?currency=USD">Switch to USD</a>';
echo
'<a href="eshop.php?currency=EUR">Switch to EUR</a>';
?>

Regardless of the user choice, the cookie value is used, so unless you change the default 'request_order' or 'variables_order' the $_REQUEST[something] variable is stuck with the cookie value forever regardless of the user 'REQUEST'.

Fix 1:

<?php
ini_set
('request_order', 'CGP'); # use previous value (stored in cookie) or new value upon user request
.
.
.
?>

Fix 2:
Be very careful and patient and go with $_GET, $_POST and $_COOKIE instead of the convenient $_REQUEST. Good luck.
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