What is the best way to handle multiple variables in an email message in PHP?

When handling multiple variables in an email message in PHP, the best way is to use PHP's concatenation operator (.) to combine the variables with the email message content. This allows you to easily insert dynamic data into the email message without breaking the string. Additionally, using double quotes around the string will allow for variable interpolation, making it easier to include variables within the email message.

$email = "example@example.com";
$name = "John Doe";
$message = "Hello " . $name . ", thank you for your inquiry. We will get back to you at " . $email . " shortly.";

// Send email code here