Retrieving Information from HTTP Requests

<< PHP Tutorials - Herong's Tutorial Examples

This chapter provides tutorial examples and notes about HTTP request. Topics include retrieving information from $_GET, $_POST, $_COOKIE, $_REQUEST, $_SERVER; promoting and registering $_REQUEST keys and values as global variables.

Predefined Variables Related to HTTP Requests

Operating System Information in $_SERVER

Web Server Information in $_SERVER

Information in $_GET and $_REQUEST

Registering $_REQUEST Keys as Global Variables

Conclusion:

• $_GET contains information submitted with the GET method.
• $_POST contains information submitted with the POST method.
• $_COOKIE contains information stored as cookies.
• $_REQUEST is the sum of $_GET, $_POST, and $_COOKIE.
• $_SERVER contains information from the HTTP request, the Web server and the operating system.