Enable opcache for php in wamp - php

Question

I try to enable opcache on wamp but it doesnt work. I changed the settings like this :
[opcache]
zend_extension=C:/wamp/bin/php/php5.5.12/ext/php_opcache.dll
opcache.enable=1
opcache.enable_cli=1
opcache.memory_consumption=128
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=4000
I always have the red exclamation mark in the extension of php for opcache
whats wrong? some help pls
And it is in the the phpinfo()
Zend OPcache
Opcode Caching Up and Running
Optimization Enabled
Startup OK
Shared memory model win32
Cache hits 0
Cache misses 1
Used memory 483608
Free memory 133734120
Wasted memory 0
Cached scripts 1
Cached keys 2
Max keys 7963
OOM restarts 0
Hash keys restarts 0
Manual restarts 0
opcache.blacklist_filename no value no value
opcache.consistency_checks 0 0
opcache.dups_fix Off Off
opcache.enable On On
opcache.enable_cli Off Off
opcache.enable_file_override Off Off
opcache.error_log no value no value
opcache.fast_shutdown 1 1
opcache.file_update_protection 2 2
opcache.force_restart_timeout 180 180
opcache.inherited_hack On On
opcache.interned_strings_buffer 8 8
opcache.load_comments 1 1
opcache.log_verbosity_level 1 1
opcache.max_accelerated_files 4000 4000
opcache.max_file_size 0 0
opcache.max_wasted_percentage 5 5
opcache.memory_consumption 128 128
opcache.mmap_base no value no value
opcache.optimization_level 0xFFFFFFFF 0xFFFFFFFF
opcache.preferred_memory_model no value no value
opcache.protect_memory 0 0
opcache.restrict_api no value no value
opcache.revalidate_freq 60 60
opcache.revalidate_path Off Off
opcache.save_comments 1 1
opcache.use_cwd On On
opcache.validate_timestamps On On
I found this If you want to know if it works : https://github.com/rlerdorf/opcache-status/blob/master/opcache.php

Answer 1

In PHP5.5.12 opcache is delivered as a zend extension but it is found in the standard ext folder.
You would therefore load it just like any other PHP extension, apart from using the zend_extension rather than extension paramter, so edit your php.ini file using the wampmanager menus to make sure you edit the right file like so :-
wampmanager -> PHP -> php.ini
First check that this parameter is set correctly :
extension_dir = "C:/wamp/bin/php/php5.5.12/ext/"
Now where you have loaded the OpCache dll in your example, do it like this and it will be loaded from the default extension folder just like a normal extension= would be :-
zend_extension=php_opcache.dll
You could do it like this :-
zend_extension="C:/wamp/bin/php/php5.5.12/ext/php_opcache.dll"
but there is no need to specify the full path as it is loaded from the standard ext folder.
Warning
If you are still developing you almost definitely don't what this turned on as it won't add any benefit and could add time to a standard compilation, recaching after every code change, and possibly not re-compiling and using the cached code when you don't want it to.

Answer 2

Since you are working on windows i think you should set the path like this
zend_extension=C:\path\to\php_opcache.dll (win) [Note the slash]
for your case:
zend_extension=C:\wamp\bin\php\php5.5.12\ext\php_opcache.dll
Note that when the path contains spaces you should wrap it in quotes:
zend_extension="C:\Program Files\PHP5.5\ext\php_opcache.dll"
Try it out and see if it helps