function valid_ca_phone_number in Phone 5

Same name and namespace in other branches

1. 6 phone.ca.inc \valid_ca_phone_number()
2. 7 include/phone.ca.inc \valid_ca_phone_number()

Verifies that $phonenumber is a valid ten-digit North American phone number

Parameters

string $phonenumber:

Return value

boolean Returns boolean FALSE if the phone number is not valid.

File

./phone.ca.inc, line 10

Code

function valid_ca_phone_number($phonenumber) {

  //$phonenumber = trim($phonenumber);

  // define regular expression
  $regex = "/\n    \\D*           # ignore non-digits\n    1?            # an optional 1\n    \\D*           # optional separator \n    [02-9]\\d{2}   # area code (can't start with 1)\n    \\D*           # optional separator\n    \\d{3}         # 3-digit prefix\n    \\D*           # optional separator\n    \\d{4}         # 4-digit line number\n    \\D*           # optional separator\n    \\d*           # optional extension\n    \\D*           # ignore trailing non-digits\n    /x";

  // return true if valid, false otherwise
  return (bool) preg_match($regex, $phonenumber);
}