Flash和PHP交互中同步session
今天在使用Uploadify和thinkphp进行多文件上传时遇到一个问题,在选择上传的文件并自动上传完成之后,弹出警告窗口提示“http 301”或者“http 302”重定向。后来发现是因为通过Flash插件发起的请求是另外一个客户端发起的,跟浏览器的会话不一致,而我的服务器后端代码恰好是有登录认证的。这就需要我们把当前的session_id通过url或者post的方式传递给php。
一开始我设想将session_id作为query_string传递给php后(即$_GET['session_id']或者$_POST['session_id']),通过session_destory()、session_id($_REQUEST['session_id'])、session_start()系列函数,将flash的会话同步为和浏览器一致。而一技术群里有高手提醒说只要把php.ini中的session.name作为参数传递,PHP就会自动处理了。也就是$_GET或者$_POST或者$_COOKIE数组里有一个“PHPSESSID=当前会话的id”,就能让php自动处理、实现会话的传递了。就是这样:
$("#uploadify").uploadify({ 'uploader' : '/xxx/xxx/uploadify.swf', 'script' : '/xxx/xxx/xxx.php', 'scriptData' : {'PHPSESSID' : '= session_id() ?>'}, ....
或者:
$("#uploadify").uploadify({ 'uploader' : '/xxx/xxx/uploadify.swf', 'script' : '/xxx/xxx/xxx.php?PHPSESSID== session_id() ?>', ...
不过谁能告诉我Flash的Cookies要怎么清除啊。。因为这个原因调试过程中一直困难重重。哈哈。。实在太笨了
这是今天解决的的一个问题,哈哈不过 我发现flash里只传PHPSESSID参数,赋值为空也可以……

PHPidentifiesauser'ssessionusingsessioncookiesandsessionIDs.1)Whensession_start()iscalled,PHPgeneratesauniquesessionIDstoredinacookienamedPHPSESSIDontheuser'sbrowser.2)ThisIDallowsPHPtoretrievesessiondatafromtheserver.

The security of PHP sessions can be achieved through the following measures: 1. Use session_regenerate_id() to regenerate the session ID when the user logs in or is an important operation. 2. Encrypt the transmission session ID through the HTTPS protocol. 3. Use session_save_path() to specify the secure directory to store session data and set permissions correctly.

PHPsessionfilesarestoredinthedirectoryspecifiedbysession.save_path,typically/tmponUnix-likesystemsorC:\Windows\TemponWindows.Tocustomizethis:1)Usesession_save_path()tosetacustomdirectory,ensuringit'swritable;2)Verifythecustomdirectoryexistsandiswrita

ToretrievedatafromaPHPsession,startthesessionwithsession_start()andaccessvariablesinthe$_SESSIONarray.Forexample:1)Startthesession:session_start().2)Retrievedata:$username=$_SESSION['username'];echo"Welcome,".$username;.Sessionsareserver-si

The steps to build an efficient shopping cart system using sessions include: 1) Understand the definition and function of the session. The session is a server-side storage mechanism used to maintain user status across requests; 2) Implement basic session management, such as adding products to the shopping cart; 3) Expand to advanced usage, supporting product quantity management and deletion; 4) Optimize performance and security, by persisting session data and using secure session identifiers.

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