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[lik]

Homepage: http://eaccelerator.net/

Choose the preferable version and install it:

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cd /usr/local/src
    wget http://bart.eaccelerator.net/source/0.9.5.2/eaccelerator-0.9.5.2.tar.bz2
    bzip2 -d eaccelerator-0.9.5.2.tar.bz2
    tar xvf eaccelerator-0.9.5.2.tar
    cd eaccelerator-0.9.5.2


Check if all needed modules presented in the system:

* apache >= 1.3,
* mod_php >= 4.1,
* autoconf,
* automake,
* libtool,
* m4

Sometimes php-devel package needed, because phpize function is used to compile php:

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yum install php-devel
whereis phpize

Commonly it`s in /usr/bin/phpize.
In this situation we should do following:

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    export PHP_PREFIX="/usr"
    $PHP_PREFIX/bin/phpize
    ./configure
    --enable-eaccelerator=shared
    --with-php-config=$PHP_PREFIX/bin/php-config
    make
    make install


Obtain location of php.ini (default /etc/php.ini) and add following lines:

extension="eaccelerator.so"
eaccelerator.shm_size="16"
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="0"
eaccelerator.shm_prune_period="0"
eaccelerator.shm_only="0"
eaccelerator.compress="1"
eaccelerator.compress_level="9"

This settings are for eAccelerator usage as php extension. There is another mode, to use as Zend extension:

zend_extension="/usr/lib/php4/eaccelerator.so"
eaccelerator.shm_size="16"
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="0"
eaccelerator.shm_prune_period="0"
eaccelerator.shm_only="0"
eaccelerator.compress="1"
eaccelerator.compress_level="9"

Create folder for eaccelerator cache storage:

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    mkdir /tmp/eaccelerator
    chmod 0777 /tmp/eaccelerator

Finally, restart Apache service:

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service httpd restart