Opcache Control Panel

Details Files Reset Recheck Refresh
memory
128M
119M93%free
9M6%used
0wasted
keys
16K
16K99%free
1scripts
0wasted
hits
3
266%hits
133%misses
0blacklist
restarts
1
1manual
0keys
0memory

general

Hostdb-test-vm
PHP VersionPHP 8.0.3 apache2handler Linux
Opcache VersionZend OPcache 8.0.3
Uptime15 hours and 34 minutes
Last Restart3 hours ago

memory

Used Memory8.8M
Free Memory119.2M
Wasted Memory0
Current Wasted Percentage0

statistics

Num Cached Scripts1
Num Cached Keys1
Max Cached Keys16229
Hits2
Oom Restarts0
Hash Restarts0
Manual Restarts1
Misses1
Blacklist Misses0
Blacklist Miss Ratio0
Opcache Hit Rate66.7

functions

opcache_reset
opcache_get_status
opcache_compile_file
opcache_invalidate
opcache_get_configuration
opcache_is_script_cached

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