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Informations about the package zf2-purifier
Soflomo\Purifier
Soflomo\Purifier is the HTMLPurifier integration for Zend Framework 2. It provides a Zend\Filter\FilterInterface instance so you can use Soflomo\Purifier directly to filter your html input with your Zend\InputFilter classes. Furthermore, a view helper is provided to help purifying html on the fly in view scripts.
Installation
Soflomo\Purifier is available through composer. Add "soflomo/purifier" to your composer.json list. You can specify the latest stable version of Soflomo\Purifier:
To enable the module in your config/application.config.php file, add an entry Soflomo\Purifier to the list of enabled modules.
Usage
In your input filter configuration, add the htmlpurifier filter to filter the result. An example form:
If your form has the filter plugin manager injected, this should work out-of-the-box. If not, please read how to inject the filter plugin manager.
When you are not able to filter the html when it is inserted into the database, you might want to filter the html in your view. Please be aware HTMLPurifier is not a very fast library and as such, filtering on every request can be a significant performance bottleneck. Be advised to use a caching mechanism to cache the output of the filtered html. The view helper is available under the key htmlPurifier:
And there is a shorthand available too:
Inject Filter Manager
If you instantiate your form with new FormClass, the plugin manager for filters is not injected. As such, you get a ServiceNotFoundException: "Zend\Filter\FilterPluginManager::get was unable to fetch or create an instance for htmlpurifier". This means the filter plugin manager does not know about the htmlpurifier plugin.
You can fix this by grabbing the filter plugin manager from the Service Manager and inject it into the form manually:
The library Soflomo\Common has a utility class to inject the filter manager. If you require soflomo\common via composer, you can replace above code with this line:
Speed up performance
HTMLPurifier is not the fastest library, but it is the most secure one to filter html in php. By default, HTMLPurifier uses a large number of classes and inclusion of all the files slows down performance during autoloading. You can create a standalone version of the HTMLPurifier class, where a single file contains most of the classes.
The script in vendor/bin/purifier-generate-standalone generates this file for you. The standalone file is created inside vendor/ezyang/htmlpurifier/library (there is nothing to configure about that) so make sure you can write in that directory. The Soflomo\Purifier library helps you to use this standalone version by the configuration option soflomo_prototype.standalone. In your config/autoload/local.php:
If your composer does not load the libraries into vendor/, you can update the path to the standalone version too:
Configure HTMLPurifier
The HTMLPurifier has a class HTMLPurifier_Config where it is possible to configure the purifier rules. Most configuration rules are based on a key/value pair: $config->set('HTML.Doctype', 'HTML 4.01 Transitional');. This mapping is copied to Zend Framework 2 configuration files, so you can easily modify HTMLPurifiers configation:
