PHP ile Google Translate API Bağlantısı

<?php
require("GTranslate.php");
 try{
       $gt = new Gtranslate;
       echo "Translating [Hello World] from English to German => ".$gt->english_to_german("hello world")."<br/>";
        echo "Translating [Ciao mondo] Italian to English => ".$gt->it_to_en("Ciao mondo")."<br/>";
 } catch (GTranslateException $ge)
 {
       echo $ge->getMessage();
 }
?>

$language = array('ar','bg','zh-CN','hr','cs','da','nl','en','fi','fr','de','el',' hi','it','ja','ko','no','pl','pt','ro','ru','es',' sv','tr');
function cevirbunu($ceviri, $d1, $d2)
{
$ceviri= urlencode($ceviri);
$json = file_get_contents("http://ajax.googleapis.com/ajax/services/language/translate?v=1.0&q=".$ceviri."&langpair=".$d1."%7C" .$d2);
$stdClass=json_decode($json);
return $stdClass->responseData->translatedText;
}

$metin=""; // Çevirilecek metin
$toplamsatir=strlen($metin);
$kackere=ceil($toplamsatir/1500);
$satiral=$toplamsatir;
for ($i=0;$i<$kackere;$i++) {
$basla=$i*1500;
if ($toplamsatir > 1500) {
$satiral=1500;
$toplamsatir=$toplamsatir-1500;
}
else { 
$satiral=$toplamsatir; 
}
$metin=substr($metin,$basla,$satiral);
$metin2.=cevirbunu($metin, 'en', 'tr'); 
}
echo 'Yeni Metin: '.$metin2;