php header 函數詳解_PHP教程

網頁的緩衝是由 HTTP訊息頭中的“Cache-control”來控制的，常見的取值有private、no-cache、-age、must-1-cache、must---control: -age=52---3-revalidate、--4-control值為“no-: Fri, 31 Dec 1999 16:00:00= no-=no-= -1-1.1伺服器指定 CacheControl = no-1.0 伺服器不能使用 Cache-1.0 伺服器，IE使用Pragma:no-:則 Internet Explorer不會緩衝此響應。注意：Pragma:no-cache 僅當在安全連線中使用時才防止緩衝，如果在非安全頁中使用，處理方式與 Expires:---(“HTTP/1.1 404(“HTTP/1.1 404(“Location: http:(“HTTP/1.1 302(“Location: http:(“Content-type: text/plain’); (‘Content-Disposition: attachment; filename=”weizhifeng.(‘weizhifeng./1.1('HTTP/1.1 200 OK'('HTTP/1.1 404 Not Found'('HTTP/1.1 301 Moved Permanently');('Location: http://www.example.org/'('Refresh: 10; url=http://www.example.org/''You will be redirected in 10 seconds'('Content-Transfer-Encoding: binary'('example.zip'('Cache-Control: no-cache, no-store, max-age=0, must-revalidate'('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); ('Pragma: no-cache'('Content-Type: text/html; charset=iso-8859-1'('Content-Type: text/html; charset=utf-8'('Content-Type: text/plain'); ('Content-Type: image/jpeg'); ('Content-Type: application/zip'); ('Content-Type: application/pdf'); ('Content-Type: audio/mpeg'); ('Content-Type: application/x-shockwave-flash'); ('HTTP/1.1 401 Unauthorized'('WWW-Authenticate: Basic realm="Top Secret"''Text that will be displayed if the user hits cancel or ''enters wrong login data'?>

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