Online PHP editor | output for 321qT

<?php / display form if user has not clicked submit if (!isset($_POST["submit"])) { ?> <form method="post" action="<?php echo $_SERVER["PHP_SELF"];?>"> From: <input type="text" name="from"><br> Subject: <input type="text" name="subject"><br> Message: <textarea rows="10" cols="40" name="message"></textarea><br> <input type="submit" name="submit" value="Submit Feedback"> </form> <?php } else // the user has submitted the form { // Check if the "from" input field is filled out if (isset($_POST["from"])) { $from = $_POST["from"]; // sender $subject = $_POST["subject"]; $message = $_POST["message"]; // message lines should not exceed 70 characters (PHP rule), so wrap it $message = wordwrap($message, 70); // send mail mail("webmaster@example.com",$subject,$message,"From: $from\n"); echo "Thank you for sending us feedback"; } }