<?php
$dbhost = 'mityfencesystems.netfirmsmysql.com';
$dbuser = 'webadmin';
$dbpass = 'XQF[g11(';
$db = 'customers';

$db = new mysqli($dbhost, $dbuser, $dbpass, $db);

if ($db->connect_errno) {
    die('Connection Error on db: ' . $db->connect_errno);
}

if (isset($_POST['name']) === true && empty($_POST['name']) === false) {
    $name = $_POST['name'];
    if ($prep = $db->prepare('SELECT DealerEmail FROM `dealers` WHERE `DealerName`=?')) {
        $prep->bind_param('s', $name);
        $prep->execute();
        $prep->bind_result($DealerEmail);
        $prep->fetch();
        echo ($DealerEmail != null) ? $DealerEmail : 'No email';
        $prep-close();
    }
} else {
    echo 'There was a problem preparing the statement';
}
$sql->close();
?>