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function valid_it_phone_number in Phone 5

Same name and namespace in other branches
  1. 6 phone.it.inc \valid_it_phone_number()
  2. 7 include/phone.it.inc \valid_it_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.it.inc, line 9

Code

function valid_it_phone_number($phonenumber) {

  // define regular expression
  $regex = "/^(0([1345789][0159]|(37|54|73|96)[1234567]|(12|17|34|38|46|52|57|78|8[678]|9[2378])[12345]|(14|32|47)[1234]|(18|36|53|57|77|82)[345]|(33|72|83|94)[12]|1(31|6[1356]|8[27])|2|3(46|62|86)|4([23][123456789]|4[245]|81)|5([368]6|32|6[45]|[78][78]|8[345])|6|7(4[2346]|6[1356]|7[16]|89)|8(2[78]|3[356])|968|976)\\/[1-9]|3([234][03789]|3[456]|46|6[0368]|8[0389]|9[0123])\\/)[0-9 -]+[0-9]\$/i";

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