Is everything preg_replace except numbers, letters, periods and slashes?

Question

I have a regex that breaks everything except letters. numbers and periods. How can I add bindings to it?

$targetFile = preg_replace('/[^A-Za-z0-9-.]/', '', $targetFileDirty); 

Answer 1

You can avoid the afterburner by preceding it with a backslash - $targetFile = preg_replace('/[^A-Za-z0-9-.\/]/', '', $targetFileDirty);

Alternatively, and perhaps better, you can use different delimiters, for example, $targetFile = preg_replace('#[^A-Za-z0-9-./]#', '', $targetFileDirty);

Answer 2

To be Unicode compatible, you can use:

 $targetFile = preg_replace('#[^\pL\pN./-]+#', '', $targetFileDirty); 

Answer 3

Just add a hidden forward slash: [^A-Za-z0-9-.\\/]