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Free and easy to use HTML filter library HTML Purifier is an open source standards-compliant HTML filter library developed using PHP. HTML Purifier will not only remove all malicious code (better known as XSS) with a thoroughly audited, secure yet permissive whitelist, it will also make sure your documents are standards compliant, something only achievable with a comprehensive knowledge of W3C's specifications. Tired of using BBCode due to the current landscape of deficient or insecure HTML filters? Looking for high-quality, standards-compliant, open-source components for that application you're building? Have a WYSIWYG editor but never been able to use it? HTML Purifier is for you! What's New in This Release: · APIs for ConfigSchema subsystem have substantially changed. See · docs/dev-config-bcbreaks.txt for details; in essence, anything that · had both namespace and directive now have a single unified key. Some configuration directives were renamed, specifically: · %AutoFormatParam.PurifierLinkifyDocURL -> %AutoFormat.PurifierLinkify.DocURL · %FilterParam.ExtractStyleBlocksEscaping -> %Filter.ExtractStyleBlocks.Escaping · %FilterParam.ExtractStyleBlocksScope -> %Filter.ExtractStyleBlocks.Scope · FilterParam.ExtractStyleBlocksTidyImpl -> %Filter.ExtractStyleBlocks.TidyImpl · As usual, the old directive names will still work, but will throw E_NOTICE · errors. · The allowed values for class have been relaxed to allow all of CDATA for · doctypes that are not XHTML 1.1 or XHTML 2.0. For old behavior, set · Attr.ClassUseCDATA to false. · Instead of appending the content model to an old content model, a blank · element will replace the old content model. You can use #SUPER to get · the old content model. · More robust support for name="" and id="" · HTMLPurifier_Config::inherit($config) allows you to inherit one · configuration, and have changes to that configuration be propagated · to all of its children. · Implement %HTML.Attr.Name.UseCDATA, which relaxes validation rules on · the name attribute when set. Use with care. Thanks Ian Cook for sponsoring. · Implement %AutoFormat.RemoveEmpty.RemoveNbsp, which removes empty · tags that contain non-breaking spaces as well other whitespace. You · can also modify which tags should have maintained with · %AutoFormat.RemoveEmpty.RemoveNbsp.Exceptions. · Implement %Attr.AllowedClasses, which allows administrators to restrict · classes users can use to a specified finite set of classes, and · %Attr.ForbiddenClasses, which is the logical inverse. · You can now maintain your own configuration schema directories by · creating a config-schema.php file or passing an extra argument. Check · docs/dev-config-schema.html for more details. · Added HTMLPurifier_Config->serialize() method, which lets you save away · your configuration in a compact serial file, which you can unserialize · and use directly without having to go through the overhead of setup. · Fix bug where URIDefinition would not get cleared if it's directives got · changed. · Fix fatal error in HTMLPurifier_Encoder on certain platforms (probably NetBSD 5.0) · Fix bug in Linkify autoformatter involving http://foo · Make %URI.Munge not apply to links that have the same host as your host. · Prevent stray tag from truncating output, if a second · is present. · Created script maintenance/rename-config.php for renaming a configuration · directive while maintaining its alias. This script does not change source code. · Implement namespace locking for definition construction, to prevent · bugs where a directive is used for definition construction but is not · used to construct the cache hash.

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