$row = array();
if (isset($_GET['ID'])) {
    $connection = mysql_connect("exampleDBaddress", "exampleDBuseranme", "exampleDBpassword");
    mysql_select_db("project") or die("No such database");
    $result = mysql_query("SELECT * FROM `customers` WHERE `custID` = '{$_GET['ID']}'");
    mysql_close($connection);
    if (!(mysql_num_rows($result) == 0)) {
        $row = mysql_fetch_assoc($result);
        $c1 = new customer();
        $c1->setCustID($row['custID']);
        $c1->setCustName($row['custName']);
        $c1->setCustAddress($row['custAddress']);
        $c1->setcustPostCode($row['custPostCode']);
        $c1->setcustTel($row['custTel']);
        $c1->setcustMob($row['custMob']);
        $c1->setcustType($row['custType']);
        $c1->setReceiverIP(long2ip($row['receiverIP']));
        $c1->setReceiverType($row['receiverType']);
        $c1->setRouterIP(long2ip($row['routerIP']));
    } else {
        die;
    }
}
$currentPath = "http://" . $_SERVER['SERVER_NAME'] . dirname($_SERVER['PHP_SELF']);
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $valid = false;
    if (!($_POST['customerIDInput'] == null || $_POST['customerNameInput'] == null || $_POST['customerAddressInput'] == null || $_POST['customerPostcodeInput'] == null || $_POST['customerTypeInput'] == null || $_POST['receiverAddressInput'] == null || $_POST['routerAddressInput'] == null)) {
        $valid = true;
    }
    $errors = array('customerIDInput' => '', 'customerNameInput' => '', 'customerAddressInput' => '', 'customerPostcodeInput' => '', 'customerTelInput' => '', 'customerMobInput' => '', 'customerTypeInput' => '', 'receiverTypeInput' => '', 'receiverAddressInput' => '', 'routerAddressInput' => '');
    $expressions = array('customerIDInput' => '/\\b\\d{5}\\b/', 'customerNameInput' => '/^[a-zA-Z ]*$/', 'customerAddressInput' => '/^[0-9a-zA-Z\\,\\. ]*$/m', 'customerPostcodeInput' => '/^[A-Z]{1,2}[0-9][0-9A-Z]? ?[0-9][A-Z]{2}$/', 'customerTelInput' => '/\\b\\d{11}\\b/', 'customerMobInput' => '/\\b\\d{11}\\b/', 'customerTypeInput' => '/^[a-zA-Z\\,\\. ]*$/', 'receiverTypeInput' => '/^[0-9a-zA-Z\\,\\. ]*$/', 'receiverAddressInput' => '/^\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\z/', 'routerAddressInput' => '/^\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\z/');