/**
     * curl get
     */
    public function httpGet( $url ) {
        $oCurl = curl_init();
        if(stripos($url,"https://")!==FALSE){
            curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE);
            curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, FALSE);
            curl_setopt($oCurl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
        }
        curl_setopt($oCurl, CURLOPT_URL, $url);
        curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1 );
        //curl_setopt($oCurl, CURLOPT_VERBOSE, 1);
        curl_setopt($oCurl, CURLOPT_HEADER, 0);

        $sContent = curl_exec($oCurl);
        // $aStatus = curl_getinfo($oCurl);
        curl_close($oCurl);

        return $sContent;
    }

    /**
     * 以post方式提交到对应的接口url
     */
    public function postCurl( $postdata, $url, $second = 30) {
        $ch = curl_init();
        if(stripos($url,"https://")!==FALSE){
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
            curl_setopt($ch, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
        }
        //设置超时
        curl_setopt( $ch, CURLOPT_TIMEOUT, $second );
        curl_setopt( $ch, CURLOPT_URL, $url );
        //设置header
        curl_setopt( $ch, CURLOPT_HEADER, FALSE );
        //要求结果为字符串且输出到屏幕上
        curl_setopt( $ch, CURLOPT_RETURNTRANSFER, TRUE );
        //post提交方式
        curl_setopt( $ch, CURLOPT_POST, TRUE );
        curl_setopt( $ch, CURLOPT_POSTFIELDS, $postdata );
        //运行curl
        $data = curl_exec( $ch );;
        //返回结果
        if ( $data ) {
            curl_close( $ch );
            return $data;
        } else {
            $error = curl_errno( $ch );
            curl_close( $ch );
            throw new \Exception( "curl errno: $error" );
        }
    }