How can I replace white space in filename of uploaded file

Question

I\'m making a SWF uploader and have my HTML form done.

It works totally fine until I upload a SWF file with spaces in the name.

How can I replace whitespace

Answer 1

How can I replace whitespace with underscores?

The \s character class will match whitespace characters. I've added the + quantifier to collapse multiple whitespace to one _. If you don't want that, remove the +.

$file = preg_replace('/\s+/', '_', $file);