Phone number validation in php codeigniter

Question

I have used the call back function for phone no validation from here.

function valid_phone_number_or_empty($value)
{
    $value = trim($value);

    if ($value == '') {
            return TRUE;
    }
    else
    {
            if (preg_match('/^\(?[0-9]{3}\)?[-. ]?[0-9]{3}[-. ]?[0-9]{4}$/', $value))
            {
                    return preg_replace('/^\(?([0-9]{3})\)?[-. ]?([0-9]{3})[-. ]?([0-9]{4})$/', '($1) $2-$3', $value);
            }
            else
            {
                    return FALSE;
            }
    }
}

But now the problem is it doesn't accept phone-no from european countries and other parts of world which are 11 to 13 digits. Can anyone provide me with any other validation for that's universal for all countries?

Answer 1

This is always work for me:

$this->form_validation->set_rules('mobile', 'Mobile Number ', 'required|regex_match[/^[0-9]{10}$/]'); //{10} for 10 digits number