Google Translate API

<?php
$api_key = 'PUT_YOUR_SERVER_KEY_HERE';
$text = 'How are you';
$source="en";
$target="fr";

$url = 'https://www.googleapis.com/language/translate/v2?key=' . $api_key . '&q=' . rawurlencode($text);
$url .= '&target='.$target;
$url .= '&source='.$source;

$response = file_get_contents($url);
$obj =json_decode($response,true); //true converts stdClass to associative array.
if($obj != null)
{
    if(isset($obj['error']))
    {
        echo "Error is : ".$obj['error']['message'];
    }
    else
    {
        echo "Translsated Text: ".$obj['data']['translations'][0]['translatedText']."\n";
    }
}
else
    echo "UNKNOW ERROR";

?>

======================================================


Google Translate API ( PHP CURL ):
=================================

<?php
$api_key = 'PUT_YOUR_SERVER_KEY_HERE';
$text = 'How are you';
$source="en";
$target="fr";

$obj = translate($api_key,$text,$target,$source);
if($obj != null)
{
    if(isset($obj['error']))
    {
        echo "Error is : ".$obj['error']['message'];
    }
    else
    {
        echo "Translsated Text: ".$obj['data']['translations'][0]['translatedText']."\n";
        if(isset($obj['data']['translations'][0]['detectedSourceLanguage'])) //this is set if only source is not available.
            echo "Detecte Source Languge : ".$obj['data']['translations'][0]['detectedSourceLanguage']."\n";      
    }
}
else
    echo "UNKNOW ERROR";

function translate($api_key,$text,$target,$source=false)
{
    $url = 'https://www.googleapis.com/language/translate/v2?key=' . $api_key . '&q=' . rawurlencode($text);
    $url .= '&target='.$target;
    if($source)
     $url .= '&source='.$source;

    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($ch);               
    curl_close($ch);

    $obj =json_decode($response,true); //true converts stdClass to associative array.
    return $obj;
} 

?>

======================================================


Google Translate API ( GET Request ):
====================================
https://www.googleapis.com/language/translate/v2/detect?key={YOUR_API_KEY}&q=Wie%20geht%20es%20Ihnen


Multiple 'q' parameters:
========================
https://www.googleapis.com/language/translate/v2?key={YOUR_API_KEY}&source=en&target=de&q=Hello%20Ravi&q=How%20are%20you&q=I%20am%20fine