# Which file should be modified/created to enable OPcache? [duplicate]

Magento strongly recommends PHP OPcache is enabled for performance reasons. PHP 5.6 with Zend OPcache is installed on my server but i dont know which file should be modified to enable OPcache features.

# Installation

OpCache is compiled by default on PHP5.5+. However it is disabled by default. In order to start using OpCache in PHP5.5+ you will first have to enable it. To do this you would have to do the following.

Add the following line to your php.ini:

zend_extension=/full/path/to/opcache.so (nix)
zend_extension=C:\path\to\php_opcache.dll (win)


Note that when the path contains spaces you should wrap it in quotes:

zend_extension="C:\Program Files\PHP5.5\ext\php_opcache.dll"


Also note that you will have to use the zend_extension directive instead of the "normal" extension directive because it affects the actual Zend engine (i.e. the thing that runs PHP).

# Usage

Currently there are four functions which you can use:

### opcache_get_configuration():

Returns an array containing the currently used configuration OpCache uses. This includes all ini settings as well as version information and blacklisted files.

var_dump(opcache_get_configuration());


### opcache_get_status():

This will return an array with information about the current status of the cache. This information will include things like: the state the cache is in (enabled, restarting, full etc), the memory usage, hits, misses and some more useful information. It will also contain the cached scripts.

var_dump(opcache_get_status());


### opcache_reset():

Resets the entire cache. Meaning all possible cached scripts will be parsed again on the next visit.

opcache_reset();


### opcache_invalidate():

Invalidates a specific cached script. Meaning the script will be parsed again on the next visit.

opcache_invalidate('/path/to/script/to/invalidate.php', true);


# Maintenance and reports

There are some GUI's created to help maintain OpCache and generate useful reports. These tools leverage the above functions.

OpCacheGUI

Disclaimer I am the author of this project

Features:

• OpCache status
• OpCache configuration
• OpCache statistics
• OpCache reset
• Cached scripts overview
• Cached scripts invalidation
• Multilingual
• Mobile device support
• Shiny graphs

Screenshots:

opcache-status

Features:

• OpCache status
• OpCache configuration
• OpCache statistics
• Cached scripts overview
• Single file

Screenshot:

opcache-gui

Features:

• OpCache status
• OpCache configuration
• OpCache statistics
• OpCache reset
• Cached scripts overview
• Cached scripts invalidation
• Automatic refresh

Screenshot: