How can the variable $ergebnisausaction be properly set and displayed in the email?

To properly set and display the variable $ergebnisausaction in the email, you need to make sure that the variable is correctly assigned a value before being included in the email content. You can set the variable with the desired value and then concatenate it within the email message.

<?php
// Set the value of $ergebnisausaction
$ergebnisausaction = "This is the result of the action.";

// Create the email message
$email_content = "The result of the action is: " . $ergebnisausaction;

// Send the email with $email_content
// (code for sending email not included)
?>