php常用的header：301,302, Redirects, 404, Javascript, Download, Authentication，编码等设置小结

301永久跳转

302临时重定向跳转

404 Page Not Found:

Service not avaliable:

CSS样式文件:

Javascript header脚本:

Images图片输出:

For JPEG(jpg): 
 
For PNG: 
 
For BMP: 

PDF文件 (output pdf with php):

缓存Cache (force browsers not to cache files):

Download dialog下载对话框:

Authentication安全验证 (force the browser to pop up a Username/Password input window) - only available when PHP is running as an Apache module:

php header编码

header("Content-type: text/html; charset=utf-8");