不缓存页面的解决方法，php header

# 让它在过去就“失效”

header(”Expires: Mon, 26 Jul 1997 05:00:00 GMT”);

# 永远是改动过的

header(”Last-Modified: “.gmdate(”D, d M Y H:i:s”).” GMT”);

# HTTP/1.1

header(”Cache -Control: no-store, no-cache , must-revalidate”);

header(”Cache -Control: post-check=0, pre-check=0″, false);

# HTTP/1.0

header(”Pragma: no-cache ”);

header("pragma:no-cache");

header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");