How can PHP be used to maintain a consistent navigation bar while dynamically changing content on a webpage?

To maintain a consistent navigation bar while dynamically changing content on a webpage using PHP, you can create a separate PHP file for the navigation bar and include it in each page where you want the navigation bar to appear. This way, any changes made to the navigation bar will be reflected across all pages without duplicating code. 

// navigation.php
<nav>
    <ul>
        <li><a href="page1.php">Page 1</a></li>
        <li><a href="page2.php">Page 2</a></li>
        <li><a href="page3.php">Page 3</a></li>
    </ul>
</nav>
```

To include the navigation bar in your webpage, you can use the `include` function in PHP:

```php
// index.php
<!DOCTYPE html>
<html>
<head>
    <title>My Website</title>
</head>
<body>
    <?php include 'navigation.php'; ?>
    
    <div>
        <h1>Welcome to my website!</h1>
        <p>This is the homepage content.</p>
    </div>
</body>
</html>

Keywords

PHP navigation bar dynamic content webpage consistency

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