How can the calculated amount (number of tickets * €10 + €2.5 shipping) be incorporated into the email response using PHP?

To incorporate the calculated amount into the email response using PHP, you can first calculate the total amount by multiplying the number of tickets by €10 and adding €2.5 for shipping. Then, you can include this total amount in the email response by concatenating it with the rest of the email content.

// Calculate the total amount
$total_amount = ($number_of_tickets * 10) + 2.5;

// Create the email content
$email_content = "Thank you for your purchase! Your total amount is €" . $total_amount . ". Please proceed with payment.";

// Send the email
// Use the mail() function or any other email library to send the email