PHP經常使用的header頭部定義

<?php
header('HTTP/1.1 200 OK'); // ok 正常訪問
header('HTTP/1.1 404 Not Found'); //通知瀏覽器 頁面不存在
header('HTTP/1.1 301 Moved Permanently'); //設置地址被永久的重定向 301
header('Location: http://www.php20.cn/'); //跳轉到一個新的地址
header('Refresh: 10; url=http://www.php20.cn/'); //延遲轉向 也就是隔幾秒跳轉
header('X-Powered-By: PHP/6.0.0'); //修改 X-Powered-By信息
header('Content-language: zh'); //文檔語言
header('Content-Length: 1000'); //設置內容長度
header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT'); //告訴瀏覽器最後一次修改時間
header('HTTP/1.1 304 Not Modified'); //告訴瀏覽器文檔內容沒有發生改變
  
 
 /** *聲明一個須要下載的xls文件 */
header('Content-Disposition: attachment; filename=ithhc.xlsx'); header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'); header('Content-Length: '.filesize('./test.xls')); header('Content-Transfer-Encoding: binary'); header('Cache-Control: must-revalidate'); header('Pragma: public'); readfile('./test.xls'); 
 /** *內容類型 */
header('Content-Type: text/html; charset=utf-8'); //網頁編碼
header('Content-Type: text/plain'); //純文本格式
header('Content-type: text/javascript'); //js文件
header('Content-type: application/json'); //json
header('Content-type: application/pdf'); //pdf
header('Content-type: text/xml'); //xml
header('Content-Type: application/x-shockw**e-flash'); //Flash動畫 header('Content-Type: image/jpeg'); //JPG、JPEG 
header('Content-Type: application/zip'); // ZIP文件
header('Content-Type: application/pdf'); // PDF文件
header('Content-Type: audio/mpeg'); // 音頻文件 
header('Content-type: text/css'); //css文件
  
/** *聲明一個下載的zip文件 */
header('Content-Type: application/octet-stream'); header('Content-Transfer-Encoding: binary'); header('Content-Disposition: attachment; filename="ITblog.zip"'); readfile('test.zip'); /** *對當前文檔禁用緩存 */
 
header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate'); header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); /** *顯示一個須要驗證的登錄對話框 */
header('HTTP/1.1 401 Unauthorized'); header('WWW-Authenticate: Basic realm="Top Secret"');  
?>