Re: session mm storage module info - a tutorial

From: Date: Thu, 24 Aug 2000 22:42:52 +0000
Subject: Re: session mm storage module info - a tutorial
References: 1  Groups: php.general 
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Hi, again. Well I answered all of my own questions and thought I'd share my learned knowledge with the list. How To Use The MM Session Module with PHP First what is it? From Zend.com (http://www.zend.com/zend/tut/session.php): Session Handling with PHP 4 By Tobias Ratschiller "Storage Modules To read and save session data, PHP uses storage modules, thus abstracting the back end of the library. There are currently three storage modules available: -Files. By default, PHP uses the files module to save the session data to disk. It creates a text file named after the session ID in /tmp. You probably won't ever need to access this file directly. In the example of the session counter, the content of this file would look like this, which is a serialized representation of the variable: counter|i:4; -mm. If you need higher performance, the mm module is a viable alternative; it stores the data in shared memory and is therefore not limited by the hardware I/O system. -User. Used internally to realize user-level callback functions that you define with session_set_save_handler()." Now on to the installation! Assumptions: UNIX PHP installed as an Apache module. Apache and PHP are currently installed and running. These are my paths. Type your own. Grab the latest mm libary: cd /usr/local/src/ lynx -dump -src "http://www.engelschall.com/sw/mm/mm-1.1.3.tar.gz" > mm-1.1.3.tar.gz gzip -d < mm-1.1.3.tar.gz | tar xf - Configure mm. The default install path for mm if you don't use --prefix is: /usr/local/ cd mm-1.1.3 ./configure --quiet Configure PHP. The mm libray actually installs in /usr/local/lib. Use this path in php's configure. So add --with-mm=/usr/local/lib to your current configuration. cd /usr/local/src/php-4.0.1pl2 ./configure --quiet --with-apache=../apache_1.3.12 \ --enable-debug=no --enable-bcmath --with-gd=no --with-mm=/usr/local/lib make -s clean install Configure apache again. cd /usr/local/src/apache_1.3.12 ./configure --quiet --prefix=/apache \ --activate-module=src/modules/php4/libphp4.a Stop apache: /apache/bin/apachectl stop make -s clean install While Apache is stop edit your php.ini file. Change: session.save_handler = files ; default is files. mm is in memmory. users is user defined. to: session.save_handler = mm ; default is files. mm is in memmory. users is user defined. Start apache: /apache/bin/apachectl start Point your browser at a page that calls phpinfo() and make sure the configure command output contains the mm parameter. Go into /tmp (if this is where you were storing the session files). rm -f sess_* Browse a couple of pages that use sessions. Check to make sure no sess_* files are in /tmp. Success! Charles

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