How can you trigger printing by clicking a button in PHP?

To trigger printing by clicking a button in PHP, you can use JavaScript to call the print function when the button is clicked. This can be achieved by adding an onclick event to the button element that calls the window.print() function. This will prompt the browser's print dialog when the button is clicked.

<!DOCTYPE html>
<html>
<head>
    <title>Print Button Example</title>
</head>
<body>
    <button onclick="window.print()">Print</button>
</body>
</html>