Question

I’ve been searching for hours to find a regex that does this for me, all the ones I’ve found either require dashes or limit something else that I don’t need.

Like this one:
^(?([0-9]{3}))?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$

Basically I want to allow these types of input for phone number, these are all valid:

+000 111111111

+00011111111111

0022 111111111111

0022111111111

[phone]

000-7878787-0000-4587

Note that the number of digits is not limited, I only want the validation to filter out empty inputs and the alphabet. Also filter out all other characters except a maximum of 4 dashes, max. 4 spaces and an optional single plus sign.

Is this possible through preg_match or not?

Any help is appreciated, thanks!

Answer 1

Strip wanted characters out (” “, “-“), count the amount then chuck an if statement if count <= 4 (for the “+” character it would be == 1). So in total it would be

if (countSpace <= 4 && countDash <= 4 && countPlus == 1) {
…
}

As for being empty, just use the standard form validation for checking if the input has been filled or not.