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eAccelerator for PHP

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eAccelerator is a fork of TurckMMCache ( http://sourceforge.net/project/turckmm-cache/ by Dmitry Stogov )

eAccelerator stores compiled PHP scripts in shared memory and executes code directly from it. It creates locks only for short time, while searching compiled PHP script in the cache, so one script can be executed simultaneously by several engines. Files that can't fit in shared memory are cached on disk only.

eAccelerator contains a PHP encoder and loader. You can encode PHP scripts using encoder.php in order to distribute them without sources. Encoded files can be run on any site which runs PHP with eAccelerator. The sources of encoded scripts can't be restored because they are stored in a compiled form and the encoded version doesn't contain the source. Of course, some internals of the scripts can be restored with different reverse engineering tools (disassemblers, debuggers, etc), but it is not trivial.

eAccelerator is compatible with Zend Optimizer's loader. Zend Optimizer must be installed after eAccelerator in php.ini. If you don't use scripts encoded with Zend Encoder then we do not recommend you install Zend Optimizer with eAccelerator.

eAccelerator does not work in CGI mode.

===================== ===================== How to Install eaccelerator

cd /

wget http://unc.dl.sourceforge.net/source...-0.9.2a.tar.gz

tar xvzf eaccelerator-0.9.2a.tar.gz

cd eaccelerator

export PHP_PREFIX='/usr/local'

$PHP_PREFIX/bin/phpize

./configure --enable-eaccelerator=shared --with-php-config=$PHP_PREFIX/bin/php-config

make install

pico -w /usr/local/lib/php.ini

CTRL w

Find this: ;Windows Extensions

for zend

zend_extension='/eaccelerator/modules/eaccelerator.so' eaccelerator.shm_size='16' #^-The amount of shared memory (in megabytes) that eAccelerator will use eaccelerator.cache_dir='/home/eaccelerator' #^-This is the folder where it cash the compiled scripts # you can use a second drive to be faster such as '/backup/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'

for PHP

extension='/eaccelerator/modules/eaccelerator.so' eaccelerator.shm_size='16' #^-This is the folder limit (16mb), you can make it larger if you wish eaccelerator.cache_dir='/home/eaccelerator' #^-This is the folder where it cash the compiled scripts # you can use a second drive to be faster such as '/backup/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'

mkdir /home/eaccelerator

chmod 0777 /home/eaccelerator

httpd restart

or

service httpd restart

===================== =====================

Configuration Options ---------------------

eaccelerator.shm_size The amount of shared memory (in megabytes) that eAccelerator will use. '0' means OS default. Default value is '0'.

eaccelerator.cache_dir The directory that is used for disk cache. eAccelerator stores precompiled code, session data, content and user entries here. The same data can be stored in shared memory also (for more quick access). Default value is '/tmp/eaccelerator'.

eaccelerator.enable Enables or disables eAccelerator. Should be '1' for enabling or '0' for disabling. Default value is '1'.

eaccelerator.optimizer Enables or disables internal peephole optimizer which may speed up code execution. Should be '1' for enabling or '0' for disabling. Default value is '1'.

eaccelerator.debug Enables or disables debug logging. Should be '1' for enabling or '0' for disabling. Default value is '0'.

eaccelerator.check_mtime Enables or disables PHP file modification checking . Should be '1' for enabling or '0' for disabling. You should set it to '1' if you want to recompile PHP files after modification. Default value is '1'.

eaccelerator.filter Determine which PHP files must be cached. You may specify the number of patterns (for example '*.php *.phtml') which specifies to cache or not to cache. If pattern starts with the character '!', it means to ignore files which are matched by the following pattern. Default value is '' that means all PHP scripts will be cached.

eaccelerator.shm_max Disables putting large values into shared memory by ' eaccelerator_put() ' function. It indicates the largest allowed size in bytes (10240, 10K, 1M). The '0' disables the limit. Default value is '0'.

eaccelerator.shm_ttl When eaccelerator fails to get shared memory for new script it removes all scripts which were not accessed at last 'shm_ttl' seconds from shared memory. Default value is '0' that means - don't remove any files from shared memory.

eaccelerator.shm_prune_period When eaccelerator fails to get shared memory for new script it tryes to remove old script if the previous try was made more then 'shm_prune_period' seconds ago. Default value is '0' that means - don't try to remove any files from shared memory.

eaccelerator.shm_only Enables or disables caching of compiled scripts on disk. It has no effect on session data and content caching. Default value is '0' that means - use disk and shared memory for caching.

eaccelerator.compress Enables or disables cached content compression. Default value is '1' that means enable compression.

eaccelerator.compress_level Compression level used for content caching. Default value is '9' which is the maximum value

eaccelerator.keys eaccelerator.sessions eaccelerator.content Determine where keys, session data and content will be cached. The possible values are: 'shm_and_disk' - cache data in shared memory and on disk (default value) 'shm' - cache data in shared memory or on disk if shared memory is full or data size greater then 'eaccelerator.shm_max' 'shm_only' - cache data in shared memory 'disk_only' - cache data on disk 'none' - don't cache data

eAccelerator API ----------------

eaccelerator_put($key, $value, $ttl=0) puts the $value into shard memory for $ttl seconds.

eaccelerator_get($key) returns the value from shared memory which was stored by eaccelerator_put() or null if it is not exists or was expired.

eaccelerator_rm($key) removres the $key from shared memory

eaccelerator_gc() removes all expired keys from shared memory

eaccelerator_lock($lock) creates a lock with specified name. The lock can be released by function eaccelerator_unlock() or automatic on the end of request. For Example:

eaccelerator_cache_page($key, $ttl=0) caches the full page for $ttl seconds.

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