事出原由：本来是作为html5打飞机的一个分享域名邀请的链接。本来想用腾讯微博的，可是oauth验证比较麻烦，于是选用了google的shorturl服务
优点：1.短域名，用户体验更好，2.能隐藏原来的域名地址
在这注册开通自己的APIKEY
http://code.google.com/apis/urlshortener/v1/getting_started.html#APIKey//利用curl向google提交数据
$postData = array(‘longUrl’ => $longUrl, ‘key’ => $apiKey);
$jsonData = json_encode($postData);
$curlObj = curl_init();
curl_setopt($curlObj, CURLOPT_URL, ‘https://www.googleapis.com/urlshortener/v1/url’);
curl_setopt($curlObj, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curlObj, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($curlObj, CURLOPT_HEADER, 0);
curl_setopt($curlObj, CURLOPT_HTTPHEADER, array(‘Content-type:application/json’));
curl_setopt($curlObj, CURLOPT_POST, 1);
curl_setopt($curlObj, CURLOPT_POSTFIELDS, $jsonData);
来自 http://www.open-open.com/lib/view/open1331624044968.html