我正在尝试使用以下代码获取标头响应以获取需要授权的链接。但是响应标头是302 moved temporarily，我尝试使用 curlCURLOPT_FOLLOWLOCATION和响应标头是200 ok。
那么我怎样才能让下面的代码像 curl 一样工作呢？
function get_headers_x($url,$format=0, $user='', $pass='', $referer='') {
if (!empty($user)) {
$authentification = base64_encode($user.':'.$pass);
$authline = "Authorization: Basic $authentification\r\n";
} else $authline = '';
if (!empty($referer)) {
$refererline = "Referer: $referer\r\n";
} else $refererline = '';
$url_info=parse_url($url);
$port = isset($url_info['port']) ? $url_info['port'] : 80;
$fp=fsockopen($url_info['host'], $port, $errno, $errstr, 30);
if($fp) {
$head = "GET ".@$url_info['path']."?".@$url_info['query']." HTTP/1.0\r\n";
if (!empty($url_info['port'])) {
$head .= "Host: ".@$url_info['host'].":".$url_info['port']."\r\n";
} else {
$head .= "Host: ".@$url_info['host']."\r\n";
}
$head .= "Connection: Close\r\n";
$head .= "Accept: */*\r\n";
$head .= "Location: 1 \r\n";
$head .= $refererline;
$head .= $authline;
$head .= "\r\n";
fputs($fp, $head);
while(!feof($fp) or ($eoheader==true)) {
if($header=fgets($fp, 1024)) {
if ($header == "\r\n") {
$eoheader = true;
break;
} else {
$header = strtolower(trim($header));
}
if($format == 1) {
$ex = explode(':',$header);
$key = array_shift($ex);
if($key == $header) {
$headers[] = $header;
} else {
$headers[$key]=substr($header,strlen($key)+2);
}
unset($key);
} else {
$headers[] = $header;
}
}
}
return $headers;
} else {
return false;
}
}