function valid_uk_phone_number in Phone 5

File

./phone.uk.inc, line 28

Code

function valid_uk_phone_number($phonenumber) {

  /*
    Accepts:
        +441970123456
        +44(0)1970123456
        +44 1970 123 456
        +44 (0)1970 123 456
        (01970) 123456 #0001
    Rejects:
        (+441970)123456
        +44(1970)123456
        +44 01970 123 456
        (0197) 0123456 #01
  */
  $regex = "/\n    (\n        (^\\+44\\s?(\\(0\\))?\\d{4}|^\\(?0\\d{4}\\)?){1}\\s?\\d{3}\\s?\\d{3}  # 4 digit area code with optional +44 internationalisation or not, optional spaces and brackets.\n        |\n        (^\\+44\\s?(\\(0\\))?\\d{3}|^\\(?0\\d{3}\\)?){1}\\s?\\d{3}\\s?\\d{4}  # 3 digit area code with optional +44 internationalisation or not, optional spaces and brackets.\n        |\n        (^\\+44\\s?(\\(0\\))?\\d{2}|^\\(?0\\d{2}\\)?){1}\\s?\\d{4}\\s?\\d{4}  # 2 digit area code with optional +44 internationalisation or not, optional spaces and brackets.\n    )\n    (\\s?\\#\\d*)?   # optional extension number shown with a hash divider\n  /x";
  if (!preg_match($regex, $phonenumber)) {
    return false;
  }
  else {
    return true;
  }
}