Opcache Control Panel

Details Files Reset Recheck Refresh
memory
128M
114M89%free
14M10%used
0wasted
keys
7963
765096%free
1782%scripts
1351%wasted
hits
635
45771%hits
17828%misses
0blacklist
restarts
1
1manual
0keys
0memory

general

HostiZm5e4umbmo65o6t8ccgjtZ
PHP VersionPHP 7.3.13 apache2handler Linux
Opcache VersionZend OPcache 7.3.13
Uptime8 hours and 52 minutes
Last Restart6 hours ago

memory

Used Memory14M
Free Memory114M
Wasted Memory0
Current Wasted Percentage0

statistics

Num Cached Scripts178
Num Cached Keys313
Max Cached Keys7963
Hits457
Oom Restarts0
Hash Restarts0
Manual Restarts1
Misses178
Blacklist Misses0
Blacklist Miss Ratio0
Opcache Hit Rate72

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