有谁知道PHP的简单json（p）解析类？

I am stuck using a pre 5.2 release of PHP (v 5.1.6), and therefore don't have access to the handy functions like json_decode()

To complicate matters, I also don't have server privileges to install any extensions.

It would be really nice to simply include a class definition that i can use to create objects (or even a complex array) from a string of json data.

Does anyone know of a lightweight and reliable class definition that will work for me?

(I don't really feel like re-inventing the wheel here.)

Thanks in Advance!

You can download the pear JSON library directly and include the script in your app. Check out this link: http://pear.php.net/package/Services_JSON/download

You can use Services_JSON on PEAR, you'll use it like this:

if ( !function_exists('json_decode') ){
    function json_decode($content, $assoc=false){
        include_once('JSON.php');
        if ( $assoc ){
            $json = new Services_JSON(SERVICES_JSON_LOOSE_TYPE);
        } else {
            $json = new Services_JSON;
        }
        return $json->decode($content);
    }
    function json_encode($content){
        include_once('JSON.php');
        $json = new Services_JSON;
        return $json->encode($content);
    }
}

Check out Zend_Json, it seems OK, but I don't know the minimum php version required.