Install oracle and php environment under linux_PHP tutorial
The writing is rough, so just make do with it! Oracle under Linux is more complicated! ^0^ 1. Installation of Redhat7.2 operating system: 2. Installation of Mysql source code: >groupadd mysql >useradd –g mysql mysql >tar –zxvf mysql-VERSION.tar.gz >cd mysql-VERSION >./configure --prefix=/usr./local/mysql >make >make install >chown –R root /usr/local/mysql >chown –R mysql /usr/local/mysql/var >chgrp -R mysql /usr/local/mysql >cp support-files/my-medium.cnf /etc/my .cnf >cd /usr/local/mysql/bin >./safe_mysqld --user=mysql & 3. Installation of Oracle8.1.7: 1. Install the following packages: compat-libstdc++-6.2-2.9.0.16 compat-glibc-6.2-2.1.3.2 compat-egcs-c++-6.2-1.1.2.16 compat-libs-6.2-3 compat-egcs-6.2-1.1.2.16 compat-egcs-objc-6.2-1.1.2.16 (the above software packages are available in the redhat installation disk Disk1 and Disk2) 2. Install jdk118_v3-glibc-2.1.3.tar.bz2 bunzip2 jdk118_v3-glibc-2.1.3.tar.bz2 tar –xvf jdk_v3-glibc-2.1.3.tar ln –s jdk118_v3 java 3. Prepare the user environment Groupadd oinstall Groupadd dba Groupadd oper Useradd oracle –g oinstall –G dba,oper 4. Create the installation directory: mkdir /oracle chown oracle.dba /oracle chmod 775 /oracle 5. Set environment variables: Add the following content to the /etc/profile file: OARCLE_BASE=/oracle/app/oracle ORACLE_HOME=/oracle/app/oracle/product/8.1.7 ORALCE_SID=orcl ORA_NLS=/oracle/app/oracle/product /8.1.7/ocommon/nls/admin/data ORA_LANG=”SIMPLIFIED CHINESE” CLASSPATH=.:/oracle/app/oracle/product/8.1.7/jdbc/lib/classes111.zip LD_LIBRARY_PATH=/oracle/app/oracle /product/8.1.7/lib PATH=$PATH:$OACLE_HOME/BIN:$ORACLE_HOME/dbs:/etc Export ORACLE_BASE ORALCE_HOME ORACLE_SID ORA_NLS NLS_LANG LD_IBRARY Check the environment variables: . /etc/profile env|grep oracle Check the oracle settings Is it correct to add the following content to the /home/oracle/.bash_profile file: . /usr/i386-glibc21-linux/bin/i386-glibc21-linux-env.sh export LD_ASSUME_KERNEL=2.2.5 . /home/oracle/. bash_profile gcc –v Check whether it has been replaced. 6. Installation Exit and log in as oracle user to install: >su root >tar -xvf linux1701.tar >cd Disk1 >./runInstaller to install. Click next all the way. A window will pop up prompting you to run orainstRoot.sh >su >cd $ORACHE_HOME >./orainsRoot.sh. Continue the installation and a dialog box will pop up asking you to run root.sh >cd $ORACLE_HOME >./root.sh exit. The installation is complete. Apply an oracle patch >cp glibc-2.1.3-stubs.tar.gz $ORACLE_HOME >tar –zxvf glibcs-2.1.3-stubs.tar.gz >./setup_stubs.sh After installation, start oracle >svrmgrl >connect internal > startup >quit Start the listening window: >lsnrctl >start >quit 4. Installation of Apache php>tar –zxvf apache_1.3.26.tar.gz >tar –zxvf php_4.1.2.tar.gz >cd apache_1.3.26 >./configure --prefix=/usr/local/apace >cd ../ php-4.1.2 >./configure --with-mysql –with-apache=/usr/local/apache_1.3.26 --with-oci8=/oracle/app/oracle/product/8.1.7 –with-oracle= /oracle/app/oracle/product/8.1.7 --enable-track-vars >make >make install >cp php.ini-dist /usr/local/lib/php.ini >cd ../apache_1.3.26 > ./configure --activate-module=src/modules/php4/libphp4.a >make >make install Start apache >/usr/local/apache/bin/apachectl start 5. Configure apache and php >cd /usr/local/apache/conf >vi httpd.conf and set it to the path you want to set. >cd /usr/local/lib >vi php.ini configures the oracle startup module.

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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