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What till said. Additionally: 1. Specify public scope for methods File_SiteMap::__construct() and File_SiteMap::add() 2. Use single or double quotes consistently. I prefer single quotes unless escaping is required. 3. Use class constants instead of define statements for error codes. For example, use 'const ERROR_FOO = 1' in File_SiteMap so your error code is File_SiteMap::ERROR_FOO instead of FILE_SITEMAP_FOO_ERROR. 4. For mixed type arguments, you should specify what types are accepted in the parameter description. File_SiteMap_Index::add() comes to mind. |