Php Super global variable collection

Php hyper-global variable $ globals: contains a reference to a valid variable within the global range of each current script. the key of this array is the name of the global variable, $ globals array $ _ server exists from php3: the variable is set by the web server or directly

Php hyper-global variable $ globals: contains a reference to a valid variable within the global range of each current script. the key of this array is the name of the global variable, $ globals array exists from php 3.

$ _ Server: the variable is set by the web server or directly associated with the execution environment of the current script, similar to the old array $ http_server_vars (still valid, but not used ).

$ _ Get: variables submitted to the script through the http get method.

$ _ Post: the variable submitted to the script through the http post method.

$ _ Cookie: variables submitted to the script through http cookies.

$ _ Files: variables submitted to the script by uploading the http post file.

The file upload form must contain enctype = "multipart/form-data ".

$ _ Env: the variable submitted to the script in the execution environment.

$ _ Request: variables submitted to the script through get, post, and cookie mechanisms. Therefore, this array is not trustworthy, the existence or absence of all the variables contained in the array and the sequence of the variables are in php. the variables_order configuration indicator in ini is defined. this array does not directly simulate earlier versions of php 4.1.0. For more information, see import_request_variables ().

Note: Since php 4.3.0, the file information in $ _ files no longer exists in $ _ request.

$ _ Session: the variable currently registered to the script session.