Are there best practices for connecting multiple PHP scripts to achieve specific functionalities, such as sending emails?

When connecting multiple PHP scripts to achieve specific functionalities, such as sending emails, it is best practice to modularize your code by creating separate scripts for different tasks and then including them where needed. This helps with code organization, reusability, and maintenance.

// send_email.php
function send_email($to, $subject, $message) {
    // code to send email
}

// main_script.php
include 'send_email.php';

$to = 'recipient@example.com';
$subject = 'Test Email';
$message = 'This is a test email message.';

send_email($to, $subject, $message);