function _field_ipaddress_cidr2long in IP address fields 7

Converts a CIDR into a start address and end address.

1 call to _field_ipaddress_cidr2long()

_field_ipaddress_validate_cidr in ./field_ipaddress.module

Validate a CIDR input.

File

./field_ipaddress.module, line 344

Code

function _field_ipaddress_cidr2long($cidr) {
  list($ip, $bits) = explode('/', $cidr);
  $start = long2ip(ip2long($ip));
  $end = long2ip(ip2long($ip) + pow(2, 32 - $bits) - 1);
  if ($start === '0.0.0.0' || $end === '0.0.0.0') {
    return FALSE;
  }
  else {
    return array(
      'start' => ip2long($start),
      'end' => ip2long($end),
    );
  }
}