php入门-header函数

// 3秒钟后刷新页面
header("Refresh:3;url=http://localhost:80");

    Resphone Hearders的内容：

1. class="header-name" style="min-width: 0px; min-height: 0px; box-sizing: border-box; color: rgb(84, 84, 84); display: inline-block; margin-right: 0.5em; font-weight: bold; vertical-align: top; white-space: pre-wrap;">Connection:
   Keep-Alive
2. Content-Length:
   119
3. Content-Type:
   text/html; charset=UTF-8
4. Date:
   Sat, 02 Apr 2016 11:58:43 GMT
5. Keep-Alive:
   timeout=5, max=98
6. Refresh:
   3;url=http://localhost:80
7. Server:
   Apache/2.4.17 (Win64) PHP/5.6.16