create a folder compatible name

[tarscher]

Hi all,

A user can type a title for his album. I now want to convert this title string to a string i can make a folder with (mkdir) in a linux environment. Someone knows what I have to get into account (length, remove special chars,...)

It would be great if you also could suggest me a function(s) appropriat for the string conversion.

regards
Stijn

[swr]

There are only a few characters you can't put into a filename. The / is the only one I can think of.

It doesn't hurt to be strict though. This will force all characters to be a letter, number, or underscore (anything that isn't will be turned into an underscore):

$filename = preg_replace('/\W/', '_', $filename);