"; print "Output: $display_number" . "
"; ## The Commify Function function commify ($str) { $n = strlen($str); if ($n <= 3) { $return=$str; } else { $pre=substr($str,0,$n-3); $post=substr($str,$n-3,3); $pre=commify($pre); $return="$pre,$post"; } return($return); } ?>