PHP 5.5.0 and later

OPcache can only be compiled as a shared extension. If you have disabled the building of default extensions with --disable-all , you must compile PHP with the --enable-opcache option for OPcache to be available.

Once compiled, you can use the zend_extension configuration directive to load the OPcache extension into PHP. This can be done with zend_extension=/full/path/to/opcache.so on non-Windows platforms, and zend_extension=C:\path\to\php_opcache.dll on Windows.

PHP 5.2, 5.3 and 5.4

本 » PECL 擴充功能未包含於 PHP 中。

安裝此 PECL 擴充功能的訊息可在手冊中標題為 PECL 擴充功能安裝的一章中找到。 更多訊息如新版本，下載，原始文件，維護者訊息以及更新日誌等可以在這裡找到： » http://pecl.php.net/package/ZendOpcache.

PECL 擴充功能的 DLL 目前不可用。參閱 在 Windows 上建立章節。

Recommended php.ini settings

The following settings are generally recommended as providing good performance:

opcache.memory_consumption=128
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=4000
opcache.revalidate_freq=60
opcache.fast_shutdown=1
opcache.enable_cli=1

You may also want to consider disabling opcache.save_comments and enabling opcache.enable_file_override, however note that you will have to test your code before using these in production as they are known to break some frameworks and applications, particularly in cases where documentation comment annotations are used.

A full list of configuration directives supported by OPcache is also available.