validation extension

Hi, I have the start of an extension for validation based on rules defined as xml. Each rule can currently validate GET and POST variables: - validating their existence - validating regular expressions - integer ranges. The extension defines a single function for the moment, and this function enforces a rule in a certain file. The functionality is limited and the design not the greatest, but i have some different things i would like to be able to define in regards to automated validation from XML. If someone gets a chance could have a look at the code and see what may be required in order for this extension to be granted a listing at pecl. Thanks Nick