http://mywebsite.com/somefile.php?var1=value1&var2=value2&var3=value3

When accessing the URL as shown above, there will be created a total of three GET variables: var1, var2 and var3 with the values value1, value2 and value3. As you can see,  to add GET variables to the URL you need to put a question mark (?) after the filename. Then you can define any GET variables, separated by the AND mark (&).

All GET variables will be created inside an array $_GET. Accessing a file somefile.php through the above example URL, would create the following GET variables in code:

somefile.php(?var1=value1&var2=value2&var3=value3)

$_GET[‘var1’] = “value1”;
$_GET[‘var2’] = “value2”;
$_GET[‘var3’] = “value3”;

To print all GET variables, the print_r function may be used. This may make it even more clear to see what’s happening.

print_r($_GET); //prints the $_GET array on the screen