Pierre-Alain Joye has posted about some long-awaited features that he's added to his zip PECL package:

After a relatively long period without features addition, I feel like it is time to add some long awaited features to zip.

The features added are:

• Glob and pattern support - now possible to add files using a glob pattern syntax or regexp (pcre based)
• getStatusString - returns the error message containing the system/zlib or zip error, handy while debugging

These features are still just in the alpha release, but he's included some code to help you become familiar with their functionality already - one using glob, the other the regular expression.