Can you use $_GET variables when including a file in PHP? Is it possible, even from an AJAX call?

Question

I have a PHP file that handles sending out confirmation emails. I also have a calendar that I use AJAX to do various updates. When AJAX calls the update file, it updates the

Answer 1

$_GET is a global variable, so can be used anywhere within your php script, including any included scripts

Answer 2

You can handle the variables within your included script, rather than appending them onto the include path itself:

$var = "foo";
include("script.php");

-- contents of script.php --

echo $var; // 'foo'

In my opinion this is much cleaner anyway. You may desire to check to make sure the values exist within script.php before echoing out any variables.

Answer 3

There are, at least, two alternatives to solve this:

1)

if($_GET['farm']) {
    $var = $_GET['farm'];
    $farm = $var;
    include("ajaxInclude.php");
}

Then, in ajaxInclude.php:

if($farm) {
    $var = $farm;
    echo $var;
}

2)

if($_GET['farm']) {
    $var = $_GET['farm'];
    header("Location: ajaxInclude.php?farm={$var}");
}