Analysis of PHP global variable $_request

The $_request variable in PHP refers to the HTTP REQUEST variable.

What values are included in the $_request variable, depending on the request_order settings in the php.ini, the environment I am testing is PHP 5.5.12 and PHP 5.6.9, where the Request_order settings are:

Request_order = "GP"

G represents $_GET,P Representative $_post

In addition to $_get and $_post, you can also add C ($_cookie)

When request_order = "GP", PHP first queries the get variable and then queries the post variable, that is, the value of the post variable overrides the value of the get variable if the request variable for get and the name of the request variable for the post are the same.

example, set the value of Request_order in php.ini to "GPC", that is, if a variable with the same name occurs, the value of the variable in the Cookie overrides the value of the variable with the same name in the Get and POST request:

Visit http://127.0.0.3/php/phpcookbook/form/$_request.php? Name=dee&age=28

<? PHP Setcookie (' name ', ' Emperor '); Echo ' <pre> '; Print_r ($_request);

Output:

Array (    = Emperor    =)

Analysis of PHP global variable $_request