A clean and responsive interface for Zend OPcache information, showing statistics, settings and cached files, and providing a real-time update for the information.
This interface uses ReactJS and Axios and is for modern browsers.
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If you like this software or find it helpful then maybe you'll consider supporting my efforts in some way by [signing up to Flattr and leaving a micro-donation](https://flattr.com/@acollington).
The easiest way to start using the opcache-gui is to clone this repo, or simply to copy/paste/download the `index.php` file, to a location which your web server can load. Then point your browser to that location, such as `https://www.example.com/opcache/index.php`.
Once in your `vendor` directory, there are numerous ways in which you can use the interface. For example if you're using a framework such as Symfony or Laravel, you could load opcache-gui into a `Controller`. Your requirements of setting it up within your framework of choice will vary, so it's not really possible to detail how to do that within this readme... but I have faith in your ability to figure it out!
The namespace used for the class is `Amnuts\Opcache`, so once the dependency is in your `autoload.php` you can use the `\Amnuts\Opcache\Service` class. For example, you could do something like:
Then you can create whatever view you want with which to show the opcache details. Although there is a pretty neat React-based interface available for you in this repo.
Alternatively, include `vendor/amnuts/opcache-gui/index.php` directly and this'll give you the same result as just copying/pasting the `index.php` somewhere.
If you want to change any of the defaults, you can pass in just the ones you want to change if you're happy to keep the rest as-is. Just alter the array at the top of the `index.php` script (or pass in the array differently to the `Service` class). For example, the following would change only the `allow_reset` and `refresh_time` values but keep everything else as the default:
```php
$opcache = (new Service([
'refresh_time' => 2,
'allow_reset' => false
]))->handle();
```
### Changing the look
The interface has been split up to allow you to easily change the colours of the gui, or even the core components, should you wish.
The CSS for the interface is in the `build/_frontend/interface.scss` file. If you want to change the interface itself, update the `build/_frontend/interface.jsx` file - it's basically a set of ReactJS components.
If you update those files, you will want to build the interface again and have the new jsx/css put into use. To do that, run the command `php ./build/build.php` from the repo root (you will need `nodejs` and `npm` installed). Once running, you should see the output:
```
🐢 Installing node modules
🏗️ Building js and css
🚀 Creating single build file
💯 Done!
```
The build script will only need to install the `node_modules` once, so on subsequent builds it should be a fair bit quicker!
The build process will create a compiled css file at `build/interface.css` and the javascript of the interface will be in `build/interface.js`. You could probably use both of these within your own frameworks and templating systems, should you wish.
The core PHP template used in the build process, and that acts to pass various bits of data to the ReactJS side of things, is located at `build/template.phps`. If you wanted to update the version of ReactJS used, or how the wrapper html is structured, then this would be the file you'd want to update.
The overview will show you all the core information. From here you'll be able to see what host and platform you're running on, what version of OPcache you're using, when it was last reset, the functions that are available, all the directives and all the statistics associated with the OPcache (number of hits, memory used, free and wasted memory, etc.)
You can filter the results to help find the particular scripts you're looking for and change the way cached files are sorted. From here you can invalidate the cache for individual files or invalidate the cache for all the files matching your search.
If you do not want to show the file list at all then you can use the `allow_filelist` configuration option; setting it to `false` will suppress the file list altogether.
If you have set up a list of files which you don't want cache by supplying an `opcache.blacklist_filename` value, then the list of files will be listed within this tab.
If you have not supplied that configuration option in the `php.ini` file then this tab will not be displayed. If you set the `allow_filelist` configuration option to `false` then this tab will not be displayed irrespective of your ini setting.
PHP 7.4 introduced the ability to pre-load a set of files on server start by way of the `opcache.preload` setting in your `php.ini` file. If you have set that up then the list of files specifically pre-loaded will be listed within this tab.
As with the ignored file, if you have not supplied the ini setting, or the `allow_filelist` configuration option is `false`, then this tab will not be displayed.
You can reset the whole cache as well as force individual files, or groups of files, to become invalidated so that they will be cached again.
Resetting can be disabled with the use of the configuration options `allow_reset` and `allow_invalidate`.
### Real-time updates
The interface can poll every so often to get a fresh look at the opcache. You can change how often this happens with the configuration option `refresh_time`, which is in seconds.
When the real-time updates are active the interface will automatically update all the values as needed. Also, if you choose to invalidate any files or reset the cache it will do this without reloading the page, so the search term you've entered, or the page you've navigated to do not get reset. If the real-time update is not on then the page will reload on any invalidation usage.
Added a new highlight chart to show the cached keys percentage with options to turn on/off the individual highlight graphs.
**Version 2.4.1**\
Mostly bug fixes
*`memory_consumption` and `max_file_size` config settings now display as human-readable sizes
* four missing directives have been included
* better handling if `file_cache_only` is active
* cache-control header set to not cache the page
**Version 2.4.0**\
Adds cookie store for the real-time state allowing real-time to be activated on load. Cookie name and TTL length can be adjusted in the config
**Version 2.3.0**\
Adds information for interned strings and PHP 5.4 compatibility
**Version 2.2.2**\
Brings in optimisations for the file listing when filtering
**Version 2.2.1**\
Has the gauges now updating with the real-time pulse and a couple rounding issues fixed
**Version 2.2.0**\
Provides the ability to turn on/off the file list (default is on)
**Version 2.1.0**\
Now provides a much easier way to configure some options, be it the poll time, toggling the ability to reset the cache, real-time updates, etc. It also allows you to show the big values (memory usage and hit rate) as gauge graphs instead of big numbers.
**Version 2.0.0**\
Introduces the use of React.js provides the ability to seamlessly update more of the information in real-time (well, every five seconds by default) - so now the files as well as the overview get refreshed. There is an updated look, removing the gradients and going for a flatter feel. And the code in general has had an overhaul.
