How can PHP functions be used to structure and organize code for tasks like generating PDFs and sending emails?

PHP functions can be used to structure and organize code for tasks like generating PDFs and sending emails by encapsulating the code for these tasks into reusable blocks of code. This makes the code more modular, easier to maintain, and allows for better code organization. By creating functions for generating PDFs and sending emails, you can easily call these functions whenever needed throughout your code.

// Function to generate a PDF
function generatePDF($filename, $content) {
    // Code to generate PDF using libraries like TCPDF or FPDF
}

// Function to send an email
function sendEmail($to, $subject, $message) {
    // Code to send email using PHP's mail() function or a library like PHPMailer
}