Information in $_GET and $

PHP Tutorials - Herong's Tutorial Examples - Version 4.18, by Dr. Herong Yang

PHP Tutorials - Herong's Tutorial Examples

∟Retrieving Information from HTTP Requests

∟Information in $_GET and $_REQUEST

This section provides a tutorial example on how to dump information stored in the $_GET array and the $_REQUEST array.

Now try this URL, http://localhost/HttpRequestDetails.php?lang=PHP&search. You should get:

Contents of $_GET:
   lang = PHP
   search = 

Contents of $_POST:

Contents of $_COOKIE:

Contents of $_REQUEST:
   lang = PHP
   search = 

Contents of $_SERVER:
   ......
   QUERY_STRING = lang=PHP&search
   ......

Notice that:

"?lang=PHP&search" attached at the end of the URL represents information submitted with the GET method.
"?lang=PHP&search" is parsed by the PHP engine into 2 pairs of names and values and stored in the $_GET array.
The PHP engine copied the same information from $_GET to $_REQUEST.

Exercise: Try to find a way to test how to provide information with the POST method and how to provide cookies.

Last update: 2015.

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About This Book

Introduction and Installation of PHP 7.0

PHP Script File Syntax

PHP Data Types and Data Literals

Variables, References, and Constants

Expressions, Operations and Type Conversions

Conditional Statements - "if" and "switch"

Loop Statements - "while", "for", and "do ... while"

Function Declaration, Arguments, and Return Values