How can PHP developers improve code quality and maintainability by implementing a clear separation between PHP logic and HTML templates, as suggested in the discussion?

To improve code quality and maintainability, PHP developers can implement a clear separation between PHP logic and HTML templates by using a templating engine like Smarty or Twig. This separation allows for easier maintenance and modification of the HTML templates without having to touch the PHP logic, making the code more organized and easier to understand.

<?php
// PHP logic
$data = [
    'title' => 'Welcome to our website',
    'content' => 'Lorem ipsum dolor sit amet, consectetur adipiscing elit.'
];

// Load HTML template
require_once 'template.php';
?>
```

```html
<!-- template.php -->
<!DOCTYPE html>
<html>
<head>
    <title><?php echo $data['title']; ?></title>
</head>
<body>
    <h1><?php echo $data['title']; ?></h1>
    <p><?php echo $data['content']; ?></p>
</body>
</html>