<?php

header('HTTP/1.1 200 OK');

header('HTTP/1.1 404 Not Found');

header('HTTP/1.1 301 Moved Permanently');

header('X-Powered-By: PHP/6.0.0');

header('Content-language: en');

header('Content-Length: 1234');

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

header('HTTP/1.1 304 Not Modified');

###内容类型###

header('Content-Type: text/html; charset=utf-8');

header('Content-Type: text/plain');

header('Content-Type: image/jpeg');

header('Content-Type: application/zip');

header('Content-Type: application/pdf');

header('Content-Type: audio/mpeg');

header('Content-type: text/css');

header('Content-type: text/javascript');

header('Content-type: application/json');

header('Content-type: application/pdf');

header('Content-type: text/xml');

header('Content-Type: application/x-shockw**e-flash');

######

###声明一个下载的文件###

header('Content-Type: application/octet-stream'); //声明输出的是二进制字节流

header('Accept-Ranges:bytes');//声明浏览器返回大小是按字节进行计算

header('Content-Disposition: attachment; filename="ITblog.zip"');

//声明作为附件处理和下载后文件的名称//告诉浏览器文件的总大小

//告诉浏览器文件的总大小
    $fileSize = filesize($filePath);//坑 filesize 如果超过2G 低版本php会返回负数
    header('Content-Length:' . $fileSize); //注意是'Content-Length:' 非Accept-Length

header('Content-Transfer-Encoding: binary');

readfile('test.zip');

######

###对当前文档禁用缓存###

header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate');

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

######

###显示一个需要验证的登陆对话框###

header('HTTP/1.1 401 Unauthorized');

header('WWW-Authenticate: Basic realm="Top Secret"');

######

###声明一个需要下载的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')