Opcache Control Panel

Details Files Reset Recheck Refresh
memory
128M
109M85%free
19M14%used
0wasted
keys
16K
15K97%free
2681%scripts
141wasted
hits
326
5817%hits
26882%misses
0blacklist
restarts
1
1manual
0keys
0memory

general

Hostwebserverkpo
PHP VersionPHP 8.0.3 apache2handler Linux
Opcache VersionZend OPcache 8.0.3
Uptime1 hour and 19 minutes
Last Restart14 minutes ago

memory

Used Memory18.7M
Free Memory109.3M
Wasted Memory0
Current Wasted Percentage0

statistics

Num Cached Scripts268
Num Cached Keys409
Max Cached Keys16229
Hits58
Oom Restarts0
Hash Restarts0
Manual Restarts1
Misses268
Blacklist Misses0
Blacklist Miss Ratio0
Opcache Hit Rate17.8

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