Header, footer, and sidebar templates in Wordpress - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ component_behavior

intermediate

What does the get_header() function do in a WordPress theme?

In a WordPress theme, what is the output or behavior when the get_header() function is called inside a template file?

Wordpress

<?php get_header(); ?>

A It includes the header.php template file and outputs its content at the call location.

B It loads the footer.php template file and appends it to the page.

C It registers a new sidebar for widgets in the theme.

D It enqueues the main stylesheet for the theme.

💡 Hint

Think about which template file contains the top part of the page layout.

The get_header() function loads the header.php file, which usually contains the top HTML structure like the and opening tags.

❓ component_behavior

intermediate

What is the purpose of get_sidebar() in WordPress?

When a WordPress theme calls get_sidebar(), what happens in the page output?

Wordpress

<?php get_sidebar(); ?>

A It registers a new menu location in the theme.

B It loads the footer.php template file and displays the footer.

C It includes the sidebar.php template file and displays the sidebar content.

D It clears all widget areas from the sidebar.

💡 Hint

Sidebars usually hold widgets and appear on the side of the page.

The get_sidebar() function loads sidebar.php, which typically contains widget areas or navigation for the sidebar.

📝 Syntax

advanced

Which code correctly includes a custom footer template named footer-custom.php?

You want to include a footer template file named footer-custom.php instead of the default footer.php. Which code snippet does this correctly?

A <?php include('footer-custom.php'); ?>

B <?php get_footer('custom'); ?>

C <?php get_footer('footer-custom'); ?>

D <?php get_footer_custom(); ?>

💡 Hint

The get_footer() function accepts a name parameter without the 'footer-' prefix or '.php' extension.

Using get_footer('custom') loads footer-custom.php. The function appends 'footer-' and '.php' automatically.

🔧 Debug

advanced

Why does calling get_sidebar('left') fail to load sidebar-left.php?

You have a file named sidebar-left.php in your theme folder. Calling get_sidebar('left') does not display its content. What is the most likely reason?

Wordpress

<?php get_sidebar('left'); ?>

A The <code>get_sidebar()</code> function does not accept parameters.

B The sidebar-left.php file must be registered in functions.php before use.

C You must call <code>get_sidebar_left()</code> instead.

D The file <code>sidebar-left.php</code> is missing or misnamed in the theme directory.

💡 Hint

Check the exact file name and location in your theme folder.

The get_sidebar('left') function looks for sidebar-left.php in the theme folder. If the file is missing or named differently, it won't load.

🧠 Conceptual

expert

How do WordPress template parts like header, footer, and sidebar improve theme development?

Why do WordPress themes use separate template files for header, footer, and sidebar instead of putting all HTML in one file?

A They allow reusing common page sections across multiple templates, making maintenance easier.

B They force WordPress to load pages slower but improve security.

C They prevent users from editing theme files directly in the admin dashboard.

D They automatically generate dynamic content without any PHP code.

💡 Hint

Think about how repeating code in many files affects updates.

Separating header, footer, and sidebar into template parts lets developers reuse code, so changes in one file update all pages using it.

Practice

1. What is the main purpose of using get_header(), get_sidebar(), and get_footer() in a WordPress theme?

easy

A. To register new WordPress plugins

B. To create new posts automatically

C. To add custom CSS styles to the theme

D. To include reusable template parts like header, sidebar, and footer in theme files

Solution

1. Step 1: Understand the function roles

   get_header(), get_sidebar(), and get_footer() are WordPress functions used to include specific parts of a theme.

2. Step 2: Identify their purpose

   These functions help insert reusable parts like the header, sidebar, and footer into theme templates, making the site organized and easier to maintain.

3. Final Answer:

   To include reusable template parts like header, sidebar, and footer in theme files -> Option D

4. Quick Check:

   Reusable template parts = D [OK]

Hint: Remember these functions insert common page sections [OK]

Common Mistakes:

• Thinking these functions create posts
• Confusing them with CSS or plugin functions
• Assuming they add styles instead of templates

2. Which of the following is the correct way to include the sidebar template in a WordPress theme file?

easy

A. load_sidebar();

B. include_sidebar();

C. get_sidebar();

D. sidebar_include();

Solution

1. Step 1: Recall WordPress template functions

   The correct WordPress function to include the sidebar template is get_sidebar().

2. Step 2: Check syntax correctness

   Functions like include_sidebar(), load_sidebar(), or sidebar_include() do not exist in WordPress.

3. Final Answer:

   get_sidebar(); -> Option C

4. Quick Check:

   Sidebar inclusion function = A [OK]

Hint: Use get_sidebar() exactly to include sidebar templates [OK]

Common Mistakes:

• Using non-existent functions like include_sidebar()
• Forgetting parentheses after function name
• Confusing with PHP include statements

3. Given the following WordPress theme file snippet, what will be the output behavior?

<?php get_header(); ?>
<main>Content here</main>
<?php get_footer(); ?>

medium

A. Only the main content will display, header and footer missing

B. The page will display the header, main content, and footer sections

C. The page will show an error because get_footer() is missing arguments

D. Only header and footer will display, main content ignored

Solution

1. Step 1: Understand get_header() and get_footer() usage

   These functions include the header.php and footer.php template parts respectively.

2. Step 2: Analyze the snippet structure

   The snippet calls get_header(), then outputs main content inside <main>, then calls get_footer(). This means all three parts will appear on the page.

3. Final Answer:

   The page will display the header, main content, and footer sections -> Option B

4. Quick Check:

   Header + main + footer = B [OK]

Hint: get_header() and get_footer() wrap main content automatically [OK]

Common Mistakes:

• Assuming get_footer() needs arguments
• Thinking main content is ignored
• Believing header/footer won't show without extra code

4. You added get_sidebar(); in your theme file, but the sidebar does not appear on the site. What is the most likely cause?

medium

A. The sidebar.php template file is missing from the theme folder

B. You forgot to call get_header(); before get_sidebar();

C. The get_sidebar(); function requires parameters to work

D. WordPress does not support sidebars by default

Solution

1. Step 1: Check sidebar template existence

   get_sidebar(); includes sidebar.php by default. If this file is missing, nothing will show.

2. Step 2: Evaluate other options

   Calling get_header(); is not required before sidebar. get_sidebar(); works without parameters. WordPress supports sidebars by default.

3. Final Answer:

   The sidebar.php template file is missing from the theme folder -> Option A

4. Quick Check:

   Missing sidebar.php = A [OK]

Hint: Check if sidebar.php exists when sidebar is missing [OK]

Common Mistakes:

• Assuming get_sidebar() needs parameters
• Thinking header must be called first
• Believing WordPress lacks sidebar support

5. You want to create a custom footer template named footer-special.php and include it only on the homepage. Which code snippet correctly includes this custom footer in your theme's index.php?

hard

A. if (is_front_page()) { get_footer('special'); } else { get_footer(); }

B. get_footer('special'); if (is_front_page()) { get_footer(); }

C. get_footer(); if (is_front_page()) { get_footer('special'); }

D. if (is_home()) { get_footer(); } else { get_footer('special'); }

Solution

1. Step 1: Understand get_footer() with parameters

   Calling get_footer('special') loads footer-special.php. Without parameters, it loads footer.php.

2. Step 2: Use conditional to check homepage

   is_front_page() returns true on the homepage. So, use it to load the special footer only there, else load default footer.

3. Step 3: Analyze options

   if (is_front_page()) { get_footer('special'); } else { get_footer(); } correctly uses the conditional to load footer-special.php on homepage and default footer elsewhere. Other options call footers incorrectly or in wrong order.

4. Final Answer:

   if (is_front_page()) { get_footer('special'); } else { get_footer(); } -> Option A

5. Quick Check:

   Conditional footer load = C [OK]

Hint: Use get_footer('name') with condition for custom footers [OK]

Common Mistakes:

• Calling both footers unconditionally
• Using is_home() instead of is_front_page() for homepage
• Reversing the conditional logic