get_headers是指返回一個數組，包含有伺服器回響一個 HTTP 請求所傳送的標頭。
基本介紹
- 中文名：get_headers
- 類型：PHP函式
- 含有：伺服器回響一個
- 參數：format
PHP函式,參數,例子,
PHP函式
如果失敗則返回 FALSE 並發出一條 E_WARNING 級別的錯誤信息(可用來判斷遠程檔案是否存在)。
如果將可選的 format 參數設為 1，則 get_headers() 會解析相應的信息並設定數組的鍵名。
如果將可選的 format 參數設為 1，則 get_headers() 會解析相應的信息並設定數組的鍵名。
參數
url
目標 URL。
format
如果將可選的 format 參數設為 1，則 get_headers() 會解析相應的信息並設定數組的鍵名。
例子
<?php
$url = '';//遠程地址，需要添加http://
print_r(get_headers($url));
print_r(get_headers($url, 1));
?>
上例的輸出類似於：
Array
(
[0] => HTTP/1.1 200 OK
[1] => Date: Sat, 29 May 2004 12:28:13 GMT
[2] => Server: Apache/1.3.27 (Unix) (Red-Hat/Linux)
[3] => Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT
[4] => ETag: “3f80f-1b6-3e1cb03b”
[5] => Accept-Ranges: bytes
[6] => Content-Length: 438
[7] => Connection: close
[8] => Content-Type: text/html
)
Array
(
[0] => HTTP/1.1 200 OK
[Date] => Sat, 29 May 2004 12:28:14 GMT
[Server] => Apache/1.3.27 (Unix) (Red-Hat/Linux)
[Last-Modified] => Wed, 08 Jan 2003 23:11:55 GMT
[ETag] => “3f80f-1b6-3e1cb03b”
[Accept-Ranges] => bytes
[Content-Length] => 438
[Connection] => close
[Content-Type] => text/html
)
$url = '';//遠程地址，需要添加http://
print_r(get_headers($url));
print_r(get_headers($url, 1));
?>
上例的輸出類似於：
Array
(
[0] => HTTP/1.1 200 OK
[1] => Date: Sat, 29 May 2004 12:28:13 GMT
[2] => Server: Apache/1.3.27 (Unix) (Red-Hat/Linux)
[3] => Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT
[4] => ETag: “3f80f-1b6-3e1cb03b”
[5] => Accept-Ranges: bytes
[6] => Content-Length: 438
[7] => Connection: close
[8] => Content-Type: text/html
)
Array
(
[0] => HTTP/1.1 200 OK
[Date] => Sat, 29 May 2004 12:28:14 GMT
[Server] => Apache/1.3.27 (Unix) (Red-Hat/Linux)
[Last-Modified] => Wed, 08 Jan 2003 23:11:55 GMT
[ETag] => “3f80f-1b6-3e1cb03b”
[Accept-Ranges] => bytes
[Content-Length] => 438
[Connection] => close
[Content-Type] => text/html
)
