adding a comma between a list of file names

The scrip below will list all the files in a directory and also strip off every thing in the file name after a . so if I have files named 1.txt 2.txt 324.txt 5.txt it gives me a list that looks like this 123245. I need to add a , in between each of these file names so they will look like 1,2,324,5 For some reason I keep looking at this and for the life of me can't figure out what I need to do. $handle = opendir($emaildir); while (false !== ($file = readdir($handle))) { if ($file != "." && $file != "..") { $emailes .=substr($file,0,strpos($file,'.')); } } closedir($handle); -- Best regards, Richard mailto:rdkurth@starband.net