php http请求

/** * HTTP 请求数据 * @param  string $url URL * @return $data * @author Jack  */function https_request($url,$data = null){    $curl = curl_init();    curl_setopt($curl, CURLOPT_URL, $url);    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);    if (!empty($data)){        curl_setopt($curl, CURLOPT_POST, 1);        curl_setopt($curl, CURLOPT_POSTFIELDS, $data);    }    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);    $output = curl_exec($curl);    curl_close($curl);    return $output;}