Opcache Control Panel

Details Files Reset Recheck Refresh
memory
256M
232M90%free
24M9%used
136Kwasted
keys
16K
15K97%free
2281%scripts
1841%wasted
hits
62K
62K99%hits
233misses
0blacklist
restarts
246
246manual
0keys
0memory

general

Hostwo
PHP VersionPHP 7.2.34-18+ubuntu18.04.1+deb.sury.org+1 fpm-fcgi Linux
Opcache VersionZend OPcache 7.2.34-18+ubuntu18.04.1+deb.sury.org+1
Uptime1 month and 9 hours
Last Restart1 day ago

memory

Used Memory24M
Free Memory231.8M
Wasted Memory139016
Current Wasted Percentage0.1

statistics

Num Cached Scripts228
Num Cached Keys412
Max Cached Keys16229
Hits63411
Oom Restarts0
Hash Restarts0
Manual Restarts246
Misses233
Blacklist Misses0
Blacklist Miss Ratio0
Opcache Hit Rate99.6

functions

opcache_reset
opcache_invalidate
opcache_compile_file
opcache_is_script_cached
opcache_get_configuration
opcache_get_status

optimization levels

PassDescription
1Constants subexpressions elimination (CSE) true, false, null, etc.
Optimize series of ADD_STRING / ADD_CHAR
Convert CAST(IS_BOOL,x) into BOOL(x)
Convert INIT_FCALL_BY_NAME + DO_FCALL_BY_NAME into DO_FCALL
2Convert constant operands to expected types
Convert conditional JMP with constant operands
Optimize static BRK and CONT
3Convert $a = $a + expr into $a += expr
Convert $a++ into ++$a
Optimize series of JMP
4PRINT and ECHO optimization (defunct)
5Block Optimization - most expensive pass
Performs many different optimization patterns based on control flow graph (CFG)
9Optimize register allocation (allows re-usage of temporary variables)
10Remove NOPs
directives guide | functions guide | wiki.php.net | pecl | Zend source | OCP latest