note 74381 deleted from function.basename by colder

Note Submitter: bitagenda at gmail dot com Reason: useless ---- Dealing with extension is not a matter of how to extract it at all, but how to identify an extension. It all depends on your application. Why? Remember a filename could be thisfile.isnamed.something an another could be this.file.isnamed.somehting.jpg so, if you extract the first extension, it would be 'something', when it is not, it is just part of the filename. So before extracting an extension, check if your application is expecting an extension, which commonly is a 3 to 4 characters, like in .htm, or .html, .jpg or .jpeg So in practical terms, to get your extension or simple verification would be to check a possible final period followed by 3 to 4 characters, to get an image type for example. Many times it is enough to get the substr(dir,-4)