php
// curl 获取请求头
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://www.baidu.com");
curl_setopt...curl_close($ch);
var_dump(['request_header' => $curl_info]);
// curl 获取响应头
$ch = curl_init();
curl_setopt...($ch, CURLOPT_URL, "http://www.baidu.com");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); // TRUE 将...curl_setopt($ch, CURLOPT_NOBODY, true); // 有时候为了节省带宽及时间,只需要响应头
$response = curl_exec($ch);
$header_size...= curl_getinfo($ch, CURLINFO_HEADER_SIZE); // 获得响应头大小
$header = substr($response, 0, $header_size);