How can a PHP script automatically generate a new number code for each email sent?

To automatically generate a new number code for each email sent in a PHP script, you can use a combination of a unique identifier like a timestamp or a random number generator. This unique code can be appended to the email content or used as a reference in the email database.

// Generate a unique number code
$numberCode = mt_rand(10000, 99999);

// Compose the email content with the number code
$emailContent = "Your unique number code is: $numberCode";

// Send the email with the generated number code
// (code for sending email not included)