Configuration

Enabled
Determines if Zend OPCache is enabled
Enabled for CLI
Determines if Zend OPCache is enabled for the CLI version of PHP
Keys based on current working dir
When this directive is enabled, the OPcache appends the current working directory to the script key, thus eliminating possible collisions between files with the same name (basename). Disabling the directive improves performance, but may break existing applications.
Validate timestamps
When disabled, you must reset the OPcache manually or restart the webserver for changes to the filesystem to take effect.
Inherited hack
Dups fix
Revalidate path
Enables or disables file search in include_path optimization
Log verbosity level 1 All OPcache errors go to the Web server log. By default, only fatal errors (level 0) or errors (level 1) are logged. You can also enable warnings (level 2), info messages (level 3) or debug messages (level 4).
Opcache memory size 128MB The OPcache shared memory storage size.
Interned strings buffer 8 The amount of memory for interned strings in Mbytes.
Maximum cached scripts 4000 The maximum number of keys (scripts) in the OPcache hash table. Only numbers between 200 and 100000 are allowed.
Maximum wasted before restart 0.05 The maximum percentage of "wasted" memory until a restart is scheduled.
Consistency checks frequency 0 Check the cache checksum each N requests. The default value of "0" means that the checks are disabled.
Force restart timeout 180 How long to wait (in seconds) for a scheduled restart to begin if the cache is not being accessed.
Frenquency to check for changes 2 How often (in seconds) to check file timestamps for changes to the shared memory storage allocation. ("1" means validate once per second, but only once per request. "0" means always validate)
Preferred Shared Memory back-end. Leave empty and let the system decide.
Blacklist /etc/php.d/opcache*.blacklist The location of the OPcache blacklist file (wildcards allowed). Each OPcache blacklist file is a text file that holds the names of files that should not be accelerated. The file format is to add each filename to a new line. The filename may be a full path or just a file prefix (i.e., /var/www/x blacklists all the files and directories in /var/www that start with 'x'). Line starting with a ; are ignored (comments).
Exclude caching above size 0 Allows exclusion of large files from being cached. By default all files are cached.
Error log OPcache error_log file name. Empty string assumes "stderr".
Protect memory Protect the shared memory from unexpected writing during script execution. Useful for internal debugging only.
Save comments
If disabled, all PHPDoc comments are dropped from the code to reduce the size of the optimized code.
Load comments
If disabled, PHPDoc comments are not loaded from SHM, so "Doc Comments" may be always stored (save_comments=1), but not loaded by applications that don't need them anyway.
Fast shutdown
If enabled, a fast shutdown sequence is used for the accelerated code
File override
Allow file existence override (file_exists, etc.) performance feature.
Optimization level 4294967295 A bitmask, where each bit enables or disables the appropriate OPcache passes

Blacklist

No scripts are blacklisted