string sanitizer for filename

Question

I\'m looking for a php function that will sanitize a string and make it ready to use for a filename. Anyone know of a handy one?

( I could write one, but I\'m worri

Answer 1

safe: replace every sequence of NOT "a-zA-Z0-9_-" to a dash; add an extension yourself.

$name = preg_replace('/[^a-zA-Z0-9_-]+/', '-', strtolower($name)).'.'.$extension;