How can CSS be used to format fonts and colors in a PHP website?

To format fonts and colors in a PHP website, CSS can be used by embedding the styles within the HTML output generated by PHP. This can be done by using the `style` attribute within HTML tags or by including an external CSS file in the PHP code. By defining the styles in CSS, you can easily customize the fonts, colors, and other visual aspects of your website without cluttering the PHP code.

<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            font-family: Arial, sans-serif;
            color: #333;
        }
        h1 {
            font-size: 24px;
            color: #007bff;
        }
    </style>
</head>
<body>
    <h1>Welcome to my PHP website!</h1>
    <p>This is a paragraph of text.</p>
</body>
</html>