Opcache Control Panel

Details Files Reset Recheck Refresh
memory
128M
112M87%free
16M12%used
0wasted
keys
128K
128K99%free
40scripts
32wasted
hits
76
3647%hits
4052%misses
0blacklist
restarts
74
74manual
0keys
0memory

general

Hostizt4nfbq736g1ssjxobnp8z
PHP VersionPHP 7.3.5 fpm-fcgi Linux
Opcache VersionZend OPcache 7.3.5
Uptime5 months and 32 minutes
Last Restart7 seconds ago

memory

Used Memory16M
Free Memory112M
Wasted Memory0
Current Wasted Percentage0

statistics

Num Cached Scripts40
Num Cached Keys72
Max Cached Keys130987
Hits36
Oom Restarts0
Hash Restarts0
Manual Restarts74
Misses40
Blacklist Misses0
Blacklist Miss Ratio0
Opcache Hit Rate47.4

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