Opcache Control Panel

Details Files Reset Recheck Refresh
memory
128M
119M92%free
9M7%used
0wasted
keys
16K
16K99%free
3scripts
0wasted
hits
53
5094%hits
35%misses
0blacklist
restarts
147
147manual
0keys
0memory

general

Hostvps-2b595bd3
PHP VersionPHP 7.4.33 apache2handler Linux
Opcache VersionZend OPcache 7.4.33
Uptime3 weeks and 5 hours
Last Restart21 minutes ago

memory

Used Memory9M
Free Memory119M
Wasted Memory0
Current Wasted Percentage0

statistics

Num Cached Scripts3
Num Cached Keys3
Max Cached Keys16229
Hits50
Oom Restarts0
Hash Restarts0
Manual Restarts147
Misses3
Blacklist Misses0
Blacklist Miss Ratio0
Opcache Hit Rate94.3

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