auto lowercase filename extention

[Anon]

Does anybody have an example script of how to make the extention of a file upload lowercase automaticly
....

like I upload 299384.TXT...than it must be converted to 299384.txt....is there a trick for this?

help me out..
Niels

[Anon]

You can use strtolower...

This will make the whole string lowercase (but it doesnt tutch numbers), so if you only want the extention i sugest you extract that first then strtolower() it and the join the who strings afterwards...

Andreas

[Anon]

If you want convert totaly the filename to lower case use:

$filename = strtolower($filename);

If you want convert only the extension, use:

$extension = ereg(".[A-Z]|[0-9]{1,}$",$filename);
$filename = ereg_replace($extension,strtolower($extension),$filename);

Can any one help you with these regular expression?

Good lucky