function delivery($conn)
{
$ret = false;
if (is_string($conn)) {
$conn = trim($conn);
if (FUNC::is_alpha($conn, false, '-')) {
$exp = explode('-', $conn);
$rep = array();
foreach ($exp as $val) {
$val = strtolower($val);
if (isset($this->_arrcon[$val])) {
$rep[] = $val;
} else {
trigger_error('Invalid connection type value "' . $val . '", on class SMTP::delivery()', 512);
}
}
if (count($rep) > 0) {
$this->_smtpconn = $rep;
$ret = true;
}
} else {
trigger_error('Invalid parameter value, on class SMTP::delivery()', 512);
}
} else {
trigger_error('Invalid parameter type value, on class SMTP::delivery()', 512);
}
return $ret;
}
function is_hostname($strhost)
{
$ret = false;
if (is_string($strhost) && $strhost != "") {
if (FUNC::is_alpha($strhost, true, "-.")) {
$exphost1 = explode('.', $strhost);
$exphost2 = explode('-', $strhost);
if (count($exphost1) > 1 && !(strstr($strhost, '.-') || strstr($strhost, '-.'))) {
$set1 = $set2 = true;
foreach ($exphost1 as $expstr1) {
if ($expstr1 == "") {
$set1 = false;
break;
}
}
foreach ($exphost2 as $expstr2) {
if ($expstr2 == "") {
$set2 = false;
break;
}
}
$ext = $exphost1[count($exphost1) - 1];
$len = strlen($ext);
if ($set1 && $set2 && $len > 1 && $len < 7 && FUNC::is_alpha($ext, false)) {
$ret = true;
}
}
}
}
return $ret;
}
