< ?php $file = '/home/elvita/docs/my_paper.pdf'; echo basename($file); /* will print: my_paper.pdf...

< ?php $filename = 'regex-for-file-extension.html'; preg_match('/^(.+)(\.([^\.]*))?$/', $filename, $matches); echo "name: $matches[1]<br />"; echo "ext: $matches[3]<br />"; /* will print: name: regex-for-file-extension ext:...