使用curl实现http请求

/**
     * 使用curl实现http请求
     * @param $url             请求地址
     * @param $timeout      　　请求超时
     * @param $method       　  请求方式
     * @param $body            POST请求报文体
     * @param $header        　请求头
     * @param $res             返回结果
     */
    function reqCurl($url, $timeout = 5, $method="get", $body = array(), $header = array()){ 
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_HEADER, 0);
　　　　　if ($header) {  
             curl_setopt($ch,CURLOPT_HTTPHEADER,$header);
        }
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_FRESH_CONNECT, true);
        curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        if($method == "post"){
            curl_setopt($ch, CURLOPT_POST, 1);       
         curl_setopt($ch,CURLOPT_POSTFIELDS,json_encode($body));
        }
        $res = curl_exec($ch);   
        curl_close($ch);  
        return $res;
    }