400 bad request in google translate free api using curl

Question

I am trying to use free Google Translate API which is extracted from Firefox's S3 Google Translator addon, ie.

https://translate.google.com/translate_a/single?client=t&sl=auto&
tl=en&hl=en&dt=bd&dt=ex&dt=ld&dt=md&dt=qca&dt=rw&dt=rm&dt=ss&dt=t
&dt=at&ie=UTF-8&oe=UTF-8&otf=2&srcrom=1&ssel=0&tsel=0&q=Hello

in PHP cURL ie.

$isPOST=isset($_POST) && !empty($_POST);
$q=$isPOST ? $_POST['q'] : $_GET['q'];

$url='https://translate.google.com/translate_a/single';
$data='client=t&sl=auto&tl=en&hl=en&dt=bd&dt=ex&dt=ld&dt=md&dt=qca&dt=rw&dt=rm&dt=ss&dt=t&dt=at&ie=UTF-8&oe=UTF-8&otf=2&srcrom=1&ssel=0&tsel=0&q='.$q;
$ch=curl_init();
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_NOBODY, 0);
curl_setopt($ch, CURLOPT_URL, !$isPOST ? $url.'?'.$data : $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_REFERER, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
if($isPOST){
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
}
$return=curl_exec($ch);
curl_close($ch);

I am calling this page using ajax..

$.ajax({
    type: text.length>750 ? 'post' : 'get',
    url: 'translate.php',
    data: 'q='+text,
    success: function(d){ alert(d); }
});

but doing this all, I get this response from Google Translate, ie.

Error: 400. That’s an error.
Your client has issued a malformed or illegal request. That’s all we know.

Please, help me solve this error and get the translated text..

Answer 1

Sorry, I tried to POST with same code and it worked.. Thank all.