Opcache Control Panel

Details Files Reset Recheck Refresh
memory
128M
90M70%free
38M29%used
0wasted
keys
128K
127K99%free
505scripts
239wasted
hits
143K
142K99%hits
507misses
0blacklist
restarts
88
88manual
0keys
0memory

general

HostiZbp18ily7toc2b14tfcm2Z
PHP VersionPHP 7.1.33 fpm-fcgi Linux
Opcache VersionZend OPcache 7.1.33
Uptime4 months and 17 hours
Last Restart51 minutes ago

memory

Used Memory38.2M
Free Memory89.8M
Wasted Memory0
Current Wasted Percentage0

statistics

Num Cached Scripts505
Num Cached Keys744
Max Cached Keys130987
Hits145535
Oom Restarts0
Hash Restarts0
Manual Restarts88
Misses507
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