我在ubuntu12.04下编译安装php5.1.6,但是我用php -v查看的时候显示的是php5.3.3,请问是怎么回事呢?
另外问问:如何将php5.3降低到php5.1?
谢谢大家!
回复讨论(解决方案)
重新选择需要的php版本进行安装。
重新选择需要的php版本进行安装。
试过,但是会造成无法生成libphp.so模块,php脚本无法在apache下运行。
跟前两天的一个问题一样,首先是 彻底的卸载 apt-get 自动安装上去的php.... 完后再编译你需要的版本
不是 autoremove... 你搜索一彻底搜索 ubuntu php mysql apache ....
另外 先生要用个这么古老的版本 为哪般呢?
跟前两天的一个问题一样,首先是 彻底的卸载 apt-get 自动安装上去的php.... 完后再编译你需要的版本
不是 autoremove... 你搜索一彻底搜索 ubuntu php mysql apache ....
另外 先生要用个这么古老的版本 为哪般呢?
主要是别人的程序的环境是这么低的版本,用高版本的话,程序很多要改。
跟前两天的一个问题一样,首先是 彻底的卸载 apt-get 自动安装上去的php.... 完后再编译你需要的版本
不是 autoremove... 你搜索一彻底搜索 ubuntu php mysql apache ....
另外 先生要用个这么古老的版本 为哪般呢?
主要是别人的程序的环境是这么低的版本,用高版本的话,程序很多要改。
我宁愿花时间来修改这个程序.... 甚至重写
跟前两天的一个问题一样,首先是 彻底的卸载 apt-get 自动安装上去的php.... 完后再编译你需要的版本
不是 autoremove... 你搜索一彻底搜索 ubuntu php mysql apache ....
另外 先生要用个这么古老的版本 为哪般呢?
主要是别人的程序的环境是这么低的版本,用高版本的话,程序很多要改。
删干净了装个5.3吧,不然漏洞有点多,随随便便就可以被攻击!

PHPsessionscanstorestrings,numbers,arrays,andobjects.1.Strings:textdatalikeusernames.2.Numbers:integersorfloatsforcounters.3.Arrays:listslikeshoppingcarts.4.Objects:complexstructuresthatareserialized.

TostartaPHPsession,usesession_start()atthescript'sbeginning.1)Placeitbeforeanyoutputtosetthesessioncookie.2)Usesessionsforuserdatalikeloginstatusorshoppingcarts.3)RegeneratesessionIDstopreventfixationattacks.4)Considerusingadatabaseforsessionstoragei

Session regeneration refers to generating a new session ID and invalidating the old ID when the user performs sensitive operations in case of session fixed attacks. The implementation steps include: 1. Detect sensitive operations, 2. Generate new session ID, 3. Destroy old session ID, 4. Update user-side session information.

PHP sessions have a significant impact on application performance. Optimization methods include: 1. Use a database to store session data to improve response speed; 2. Reduce the use of session data and only store necessary information; 3. Use a non-blocking session processor to improve concurrency capabilities; 4. Adjust the session expiration time to balance user experience and server burden; 5. Use persistent sessions to reduce the number of data read and write times.

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

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


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