Opcache Control Panel

Details Files Reset Recheck Refresh
memory
128M
91M71%free
37M28%used
0wasted
keys
128K
127K99%free
485scripts
268wasted
hits
144K
144K99%hits
486misses
0blacklist
restarts
188
188manual
0keys
0memory

general

HostiZbp18ily7toc2b14tfcm2Z
PHP VersionPHP 7.1.33 fpm-fcgi Linux
Opcache VersionZend OPcache 7.1.33
Uptime12 months and 17 hours
Last Restart1 hour ago

memory

Used Memory37M
Free Memory91M
Wasted Memory0
Current Wasted Percentage0

statistics

Num Cached Scripts485
Num Cached Keys753
Max Cached Keys130987
Hits147146
Oom Restarts0
Hash Restarts0
Manual Restarts188
Misses486
Blacklist Misses0
Blacklist Miss Ratio0
Opcache Hit Rate99.7

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