PHP and HTTP (php predefined variables)

PHP and HTTP (PHP pre-defined variables)
Var_dump ($_server[' Request_uri ');
Var_dump ($this->request->getrequesttype ());
Var_dump ($this->request->getisajaxrequest ());

Printing information
String ("/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 is built-in variables that is 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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