How can PHP developers ensure separation of logic and presentation when inserting variables into HTML templates?

To ensure separation of logic and presentation when inserting variables into HTML templates, PHP developers can use a templating engine like Twig or Blade. These templating engines allow developers to write clean, readable templates with placeholders for variables, which are then filled in by the PHP code. This approach helps maintain a clear separation between the logic in the PHP files and the presentation in the HTML templates. 

```php
// Using Twig templating engine
$loader = new \Twig\Loader\FilesystemLoader('/path/to/templates');
$twig = new \Twig\Environment($loader);

// Define variables
$name = 'John Doe';
$age = 30;

// Render template with variables
echo $twig->render('template.html', ['name' => $name, 'age' => $age]);
```

In this code snippet, we are using the Twig templating engine to render a template file called 'template.html' with variables for name and age. This ensures that the logic for defining the variables is kept separate from the presentation of the HTML template.

Keywords

PHP separation of concerns templating variable interpolation MVC architecture

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