How To Use Opcache In Yii

Yii 1.1 General Discussion
1

Hi All,

I have read the OPCache is use to save pre-compiled script in php application.

But In Yii what is the process to use opcache. What configuration options are available, for the same?

How I come to know the effect of Opcache in my application.

I am using php 5.5.13 and Yii 1.1.14.

Further I am using yii 2.0 also.

But now my problem is with version 1.1.14

Any help will be appreciated.

Thanks

2

There’s nothing to configure in Yii itself. Simply enable opcache and you’re good to go.

3

Hi Sourcerer,

Thanks for your reply.

I have enabled opcache, which I checked from opcache_get_status().

I get [opcache_enabled] => 1.

Anything else I need to do.

4

In theory, no. In practice, you’re best advised to use a control panel (such as this one) and see if you allocated enough space for the pcache to operate. I also wrote down some configuration settings here.

5

I have already go through this link.

http://www.yiiframework.com/forum/index.php/topic/40353-php-55-apc-vs-zendoptimizer/page__p__240002#entry240002

and change opcache settings as per this configuration.

But still no success. :(

6

Which means … ?

7

It means.




public function actionTest()

{

   $this->render('opcache');

}

and in opcache.php I just write




echo "hello";

Now I change text "hello" to "hello brother".

If opcache is working in the application, then on refresh the page the text should be "hello" not "hello brother", But I am getting "hello brother"

This is the issue, what I am facing.

I have enabled opcache and made all setting which you have told.

But not getting the expected result.

8

Sounds like the cache content is being purged before you can reload. The key value here is [font=“Courier New”]opcache.revalidate_freq[/font]. Check if it’s overwritten somewhere in your config. And make sure [font=“Courier New”]opcache.validate_timestamps[/font] is set to 0, as the cache will be refreshed if the timestamp of a cached file changes.

9

Thanks.

validate_timestamps is set to 0, is life saver. Thanks a lot, Finally it works. :D

10

Hi Sourcerer,

This is working fine if I work with setting in opcache.ini.

But these settings are for all application on a server.

Is there any way through which I can set opcache enable or disable for different applications.

I was trying changing in .htaccess file and try disable opcache there using




php_flag opcache.enable Off

But it doesn’t work.

Any idea or any other changes I need to do.

11

I am able to do the same.

As I was previously changing in localhost/application/protected/.htaccess

At this location it was not working.

But then I create a new .htaccess at localhost/application/.htaccess

And put the above mentioned code in that file and it works.

12

Hi,

Is it possible in an application, that only few actions will work with opcache.

I don’t want to save all data save in cache. I want to save only few data as per requirement.

Any suggestions?

13

That is no good idea and I have serious doubts that’ll be possible at all. Those actions will likely pull in framework code into the opcache. You can try to explicitly blacklist a set of files.

As for your original problem: perhaps your Apache config doesn’t allow a [font=“Courier New”].htaccess[/font] were you first placed it. Check which [font=“Courier New”]AllowOverride[/font] directives match that directory.

14

Thanks for the reply.

Yeah you are right I had to change, in httpd.conf AllowOverride directive to All.

And regarding the blacklist option, I also go through this file details. But this doesn’t solve my problem.

Because I can write the path of scripts which are outside of my application.

So this is something which will not work in my case.

Any idea how can I achieve this.

15

It would be interesting to know why you would want this in the first place.

16

Actually some times. There is an action which simply render a page. And in that page we have static HTML data.

Now if we using opcache, so this data also be cached and if I want to change this static data, to see the change effect I need to reset the cache.

Which I dont want to do. I dont want to cache this static data in my application.

I want to cache only dynamic data, which may sometimes cause error in my application.

17

So … you’ve got static data that isn’t that static? Is this in production or on your local development system?

18

This is for my local development system.

And how can I clear cached data? Currently I am doing this with server restart.

I tried function opcache_reset(). But it does not work.

19

opcache_reset() is working, I wrote it in a different function and then call that function from url.

So it helps me to clear the opcache.

But it clear all cache in the system. How can I clear cache for only specific data, not all data in cache.

20

You can invalidate specific files via [font=“Courier New”]opcache_invalidate()[/font]. But to be honest: You really shouldn’t enable opcache on your dev system.