as_load-json.php

// wtf.php

<?php

    $data = array(
        'home' => array(
                      'foo' => "d'oh!",
                      'bar' => '3',
                      'biz' => '2'
                  ),
        'some' => 'foobar'
    );
    echo "&json=".urlencode(json_encode($data))."&";

?>

index.as

// ActionScript 2

onSelfEvent (load) {
    myJSON = new LoadVars();
    myJSON.onLoad = function() {
        trace(this.json);
    };
    myJSON.load("http://localhost/wtf.php");
    trace("Loading ...");
}