LOBALSAn array of variables that exist in the global scope.$_SERVERAn array of information about paths, headers, and other information relevant to the server environment.$_GETVariables sent in a GET request.$_POSTVariables sent in a POST request.$_FILESAn associative array of files that were uploaded as part of a POSTrequest.$_COOKIEAn associative array of variables passed to the current script via HTTP cookies