I want to send tamplete.php when user enter all correct details by email otp

When user submit the data I want to send otp through email by php mailer

Tamplet.php //first page

<?php echo "hello mr " .$name;  ?>

Phpmailer.php //second page

$subject ->file_get_contents('tamplet.php');

Email is sending but the php code is not working in sended email

source https://stackoverflow.com/questions/76690205/i-want-to-send-tamplete-php-when-user-enter-all-correct-details-by-email-otp