Google translate simple php client

This morning i were reading an english based blog. I came from italy and (as you can notice) im not the best english speller at all. Sometimes i need to use an online dictionary to translate words or sentences. One of the most dictionary translation is wordreference.com and also http://translate.google.com/.
Well im a web programmer, google offers a rich api to its services, so i thought to write a really simple php batch to translate words or simple sentence.

here a snippet:


<?

if($argc < 4) die("usage: gt.php \"sentence\" <start lang> <translation lang>");

$sentence = urlencode($argv[1]);
$start = $argv[2];
$arrive = $argv[3];

$url = "http://ajax.googleapis.com/ajax/services/language/translate?v=1.0&q=$sentence&langpair=$start%7C$arrive";

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_REFERER, "http://www.google.com/");
$body = curl_exec($ch);
curl_close($ch);

$json = json_decode($body);

if(!is_null($json->responseDetails)) { die($json->responseDetails); }

echo $json->responseData->translatedText;
Hope someone could find this useful. You can call it as the follow:
gt.php "sentence or words" <strat> <translate>

Have fun =) !