<html><body><?phpif (isset($_REQUEST['email']))//if "email" is filled out, send email { //send email $email = $_REQUEST['email'] ; $to = $_REQUEST['to'] ; $subject = $_REQUEST['subject'] ; $message = $_REQUEST['message'] ; mail( $to, "Subject: $subject",$message, "From: $email" ); echo "Thank you for using our mail form"; }else//if "email" is not filled out, display the form { echo "<form method='post' action='phpmail.php'> Email nguoi gui: <input name='email' type='text' /><br /> Email nguoi nhan: <input name='to' type='text' /><br /> Subject: <input name='subject' type='text' /><br /> Message:<br /> <textarea name='message' rows='15' cols='40'> </textarea><br /> <input type='submit' /> </form>"; }?></body></html>