$_GET
(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)
$_GET — Query string variables
Description
An associative array of variables passed to the current script via the URL
parameters (also known as the query string). Note that this array is
populated whenever a query string is present, regardless of the HTTP request
method.
Examples
Example #1 $_GET example
<?php
echo 'Hello ' . htmlspecialchars($_GET["name"]) . '!';
?>
Assuming the user entered http://example.com/?name=Hannes.
The above example will output
something similar to:
Notes
Note:
This is a 'superglobal', or
automatic global, variable. This simply means that it is available in
all scopes throughout a script. There is no need to do
global $variable; to access it within functions or methods.
Note:
The values in $_GET are automatically passed through urldecode().
$_SERVER
Predefined Variables