Simple Test Mailer

<?php
error_reporting(0);

?>
Upload is <b><color>WORKING</color></b><br>
Check  Mailling ..<br>
<form method="post">
<input type="email" placeholder="E-Mail" name="email" value="<?php print $_POST['email']?>"required ><input type="text" placeholder="Order ID" name="orderid" value="<?php print $_POST['orderid']?>" ><br>
<input type="submit" value="Send test ..">
</form>
<br>
<?php
$email = trim ($_POST['email']);
if (!empty($email)){
    if (filter_var($email, FILTER_VALIDATE_EMAIL)) {

        if (!empty($_POST['orderid'])){
            $xx =  ($_POST['orderid']);
        }
        else{
            $xx = rand();
        }

        mail($email,"Result Report Test - ".$xx,"WORKING !");
        print "<b>send an report to [".$email."] - Order : $xx</b>";
    }
}
?>