curl请求

function doPosts($url, $req = array(), $isPost = 1,$header = array()){        // create a new cURL resource        //Header("Content-Type","text/html;charset=utf-8");        $ch = curl_init();        $reqs = '';        foreach($req AS $k => $v){            if($reqs)                $reqs .= "&$k=$v";            else                $reqs = "$k=$v";        }//        $header = array("Content-Type","text/html;charset=gb2312");        curl_setopt($ch, CURLOPT_URL,$url);        curl_setopt($ch, CURLOPT_HEADER, 0);        curl_setopt($ch, CURLOPT_HTTPHEADER, $header);        curl_setopt($ch, CURLOPT_POST, $isPost);//post方式提交        curl_setopt($ch, CURLOPT_POSTFIELDS, $reqs);//要提交的内容        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);//https请求        //curl_setopt($ch, CURLOPT_SSLVERSION, 6); //SSL版本设定，暂时不需要        curl_setopt($ch, CURLOPT_TIMEOUT, 30);//        print_r($reqs);        // grab URL and pass it to the browser        //print_r($reqs);        if(!$res = curl_exec($ch))        {            echo "Curl error : " . curl_error($ch);            curl_close($ch);            return false;        }        curl_close($ch);        return $res;    }

public static function curl($url, $postFields = null, $header = array()) {    $ch = curl_init ($url);    curl_setopt($ch, CURLOPT_URL, $url);    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);    curl_setopt($ch, CURLOPT_HTTPHEADER, $header);    curl_setopt($ch, CURLOPT_POST, 1);    curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields);    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);    curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);    $response = curl_exec($ch);    //$response = json_decode(json_encode(simplexml_load_string($response, 'SimpleXMLElement', LIBXML_NOCDATA)), true);    if(curl_errno($ch)){        print curl_error($ch);    }    curl_close($ch);    return $response;}