PHP 修改HTTP头 --Modify HTTP Headers
Modify HTTP Headers
// See related links for more status codes // Use this header instruction to fix 404 headers// produced by url rewriting...header('HTTP/1.1 200 OK'); // Page was not found:header('HTTP/1.1 404 Not Found'); // Access forbidden:header('HTTP/1.1 403 Forbidden'); // The page moved permanently should be used for// all redrictions, because search engines know// what's going on and can easily update their urls.header('HTTP/1.1 301 Moved Permanently'); // Server errorheader('HTTP/1.1 500 Internal Server Error'); // Redirect to a new location:header('Location: http://www.example.org/'); // Redriect with a delay:header('Refresh: 10; url=http://www.example.org/');print 'You will be redirected in 10 seconds'; // you can also use the HTML syntax:// <meta http-equiv="refresh" content="10;http://www.example.org/ /> // override X-Powered-By valueheader('X-Powered-By: PHP/4.4.0');header('X-Powered-By: Brain/0.6b'); // content language (en = English)header('Content-language: en'); // last modified (good for caching)$time = time() - 60; // or filemtime($fn), etcheader('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT'); // header for telling the browser that the content// did not get changedheader('HTTP/1.1 304 Not Modified'); // set content length (good for caching):header('Content-Length: 1234'); // Headers for an download:header('Content-Type: application/octet-stream');header('Content-Disposition: attachment; filename="example.zip"'); header('Content-Transfer-Encoding: binary');// load the file to send:readfile('example.zip'); // Disable caching of the current document:header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate');header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the pastheader('Pragma: no-cache'); // set content type:header('Content-Type: text/html; charset=iso-8859-1');header('Content-Type: text/html; charset=utf-8');header('Content-Type: text/plain'); // plain text fileheader('Content-Type: image/jpeg'); // JPG pictureheader('Content-Type: application/zip'); // ZIP fileheader('Content-Type: application/pdf'); // PDF fileheader('Content-Type: audio/mpeg'); // Audio MPEG (MP3,...) fileheader('Content-Type: application/x-shockwave-flash'); // Flash animation // show sign in boxheader('HTTP/1.1 401 Unauthorized');header('WWW-Authenticate: Basic realm="Top Secret"');print 'Text that will be displayed if the user hits cancel or ';print 'enters wrong login data';

tostartaphpsession,usesesses_start()attheScript'Sbeginning.1)placeitbeforeanyOutputtosetThesessionCookie.2)useSessionsforuserDatalikeloginstatusorshoppingcarts.3)regenerateSessiveIdStopreventFentfixationAttacks.s.4)考虑使用AttActAcks.s.s.4)

会话再生是指在用户进行敏感操作时生成新会话ID并使旧ID失效,以防会话固定攻击。实现步骤包括:1.检测敏感操作,2.生成新会话ID,3.销毁旧会话ID,4.更新用户端会话信息。

PHP会话对应用性能有显着影响。优化方法包括:1.使用数据库存储会话数据,提升响应速度;2.减少会话数据使用,只存储必要信息;3.采用非阻塞会话处理器,提高并发能力;4.调整会话过期时间,平衡用户体验和服务器负担;5.使用持久会话,减少数据读写次数。

PHPsessionsareserver-side,whilecookiesareclient-side.1)Sessionsstoredataontheserver,aremoresecure,andhandlelargerdata.2)Cookiesstoredataontheclient,arelesssecure,andlimitedinsize.Usesessionsforsensitivedataandcookiesfornon-sensitive,client-sidedata.

phpientifiesauser'ssessionusessessionSessionCookiesAndSessionIds.1)whiwSession_start()被称为,phpgeneratesainiquesesesessionIdStoredInacookInAcookInamedInAcienamedphpsessidontheuser'sbrowser'sbrowser.2)thisIdAllowSphptptpptpptpptpptortoreTessessionDataAfromtheserverMtheserver。

PHP会话的安全可以通过以下措施实现:1.使用session_regenerate_id()在用户登录或重要操作时重新生成会话ID。2.通过HTTPS协议加密传输会话ID。3.使用session_save_path()指定安全目录存储会话数据,并正确设置权限。

phpsessionFilesArestoredIntheDirectorySpecifiedBysession.save_path,通常是/tmponunix-likesystemsorc:\ windows \ windows \ temponwindows.tocustomizethis:tocustomizEthis:1)useession_save_save_save_path_path()


热AI工具

Undresser.AI Undress
人工智能驱动的应用程序,用于创建逼真的裸体照片

AI Clothes Remover
用于从照片中去除衣服的在线人工智能工具。

Undress AI Tool
免费脱衣服图片

Clothoff.io
AI脱衣机

Video Face Swap
使用我们完全免费的人工智能换脸工具轻松在任何视频中换脸!

热门文章

热工具

MinGW - 适用于 Windows 的极简 GNU
这个项目正在迁移到osdn.net/projects/mingw的过程中,你可以继续在那里关注我们。MinGW:GNU编译器集合(GCC)的本地Windows移植版本,可自由分发的导入库和用于构建本地Windows应用程序的头文件;包括对MSVC运行时的扩展,以支持C99功能。MinGW的所有软件都可以在64位Windows平台上运行。

EditPlus 中文破解版
体积小,语法高亮,不支持代码提示功能

Atom编辑器mac版下载
最流行的的开源编辑器

记事本++7.3.1
好用且免费的代码编辑器

SublimeText3 英文版
推荐:为Win版本,支持代码提示!