Question

I would like to have a regular expression which returns only the numbers and the white space which I’ve inserted. i.e.

012 345 678 

or

012 345 678 910.

Any suggestion please?

Answer 1

You could remove any other character except digits and white space. Here’s an example in PHP:

$output = preg_replace('/[^\d\s]/', '', $str);

Then the remaining string does only consist of digits and white space characters.