opcache.optimization_level

INI • INI default value changed in 7.3

opcache: opcache.optimization_level — A bitmask, where each bit enables or disables the appropriate OPcache passes

Default value "0x7FFEBFFF"
Development value "0x7FFEBFFF"
Production value "0x7FFEBFFF"

Modifiability: INI_SYSTEM - The opcache.optimization_level INI directive directive is a system-directive, and can only be configured in php.ini files or Server-API configuration files such as Apache httpd.conf. It cannot be configured with ini_set calls.

PHP 5.3-5.4
PHP 5.5
Added
PHP 5.6
Changed
PHP 7
PHP 8.0
PHP 8.1-8.2
PHP 8.3-8.4
PHP 8.5
PHP 8.6 
[opcache]
opcache.optimization_level = "0x7FFEBFFF"

Changes to the opcache.optimization_level INI

PHP 7.3

  • INI directive default value changed from 0x7FFFBFFF to 0x7FFEBFFF

PHP 5.6

  • INI directive default value changed from 0xFFFFFFFF to 0x7FFFBFFF

PHP 5.5

  • INI directive added

opcache.optimization_level INI Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Supported Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Security-Fixes Only Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported No
PHP 5.3Unsupported No