sina短链接，短url地址

function get_sina_short_url($long_url){
    $array=array(\'source\'=>\'2218378459\',\'url_long\'=>$long_url);
    $api_url=\'http://api.t.sina.com.cn/short_url/shorten.json\';
    $reqPar=\'\';
    foreach ($array as $k=>$value){
        $reqPar.=$k.\'=\'.urlencode($value).\'&\';
    }
    $reqPar = substr($reqPar, 0,-1);
    $request_url=$api_url.\'?\'.$reqPar;
    
    $json=file_get_contents($request_url);
    $res=json_decode($json);    
    //print_r($res);
    return $res[0]->url_short;
}