phpregexvalidationquantifiers

How to match one or more characters nominated in a regex character class?

I'm trying to match only numbers and spaces in my php regex but the following fails and I can't seem to understand why, can anyone shed some light on what I'm doing wrong please?

$pattern = '/^[0-9\ ]$/';
Solution

  • Your regular expression just describes one single character. You might want to add a quantifier like +:

    '/^[0-9\ ]+$/'

    This describes a string of one or more digits or space characters.