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:
}
?>
$_REQUEST
(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)
$_REQUEST — Переменные HTTP-запроса
Описание
Ассоциативный массив (array), который по умолчанию содержит данные переменных $_GET, $_POST и $_COOKIE.
Примечания
Замечание:
Это «суперглобальная» или автоматическая глобальная переменная. Это просто означает, что она доступна во всех контекстах скрипта. Нет необходимости выполнять global $variable; для доступа к ней внутри метода или функции.
Замечание:
При работе в командной строке переменные argv и argc не включаются в данный массив - они присутствуют в массиве $_SERVER.
Замечание:
Переменные в массиве $_REQUEST передаются в скрипт посредством методов GET, POST или COOKIE, поэтому им нельзя доверять, т.к. они могли быть изменены удалённым пользователем. Их наличие и порядок добавления данных в соответствующие массивы определяется директивой конфигурации PHP request_order и variables_order.
Смотрите также
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User Contributed Notes 5 notes
strata_ranger at hotmail dot com ¶
16 years ago
mike o. ¶
14 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.
codeblog.pro ¶
4 years ago
In PHP version 7.0 with the default settings.+, $_REQUEST array does not contain cookies.
Luke Madhanga ¶
8 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
Filomena ¶
4 years 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.
