I created an HTML form that, on submit, opens submit_form.php. Inside, I process the data entered into the form and send a confirmation email. I wrote a function for the mail-sending-process.
Inside the .php file, I have PHP, as well as HTML code. The important parts of the file look like this:
<?php $success = "undefined"; /* ... */ function send_mail($to, $from, $fromName, $subject, $message) { /* headers, etc. */ if (mail($to, $subject, "", $header)) { $success = "true"; } else { $success = "false"; } }?><html><body> success? <?php echo $success; ?></body</html>Now, when loading the HTML on the success site (HTML code below the .php script, in the same file), I put this code to verify whether the email was sent successfully:
success? <?php echo $success; ?>...which presents the following output: success? undefined