php与http（php预约义变量）

php与http（php预定义变量）
var_dump($_SERVER['REQUEST_URI']);
var_dump($this->request->getRequestType());
var_dump($this->request->getIsAjaxRequest());

//打印信息
string(87) "/oms07/index.php?r=preShow/searchFails&idcName=JX&fromTime=2012-02-29&toTime=2012-02-29"
string(3) "GET"
bool(false)


PHP provides a large number of predefined variables to all scripts. The variables represent everything from external variables to built-in environment variables, last error messages to last retrieved headers.

Superglobals ― Superglobals are built-in variables that are always available in all scopes
$GLOBALS ― References all variables available in global scope
$_SERVER ― Server and execution environment information
$_GET ― HTTP GET variables
$_POST ― HTTP POST variables
$_FILES ― HTTP File Upload variables
$_REQUEST ― HTTP Request variables
$_SESSION ― Session variables
$_ENV ― Environment variables
$_COOKIE ― HTTP Cookies
$php_errormsg ― The previous error message
$HTTP_RAW_POST_DATA ― Raw POST data
$http_response_header ― HTTP response headers
$argc ― The number of arguments passed to script
$argv ― Array of arguments passed to script

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