Hook priority and arguments in Wordpress - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add a function to a WordPress action hook with default priority.

Wordpress

add_action('init', [1]);

Drag options to blanks, or click blank then click option'

A'my_function', 5

B'my_function', 10

C'my_function'

D'my_function', 15

Attempts:

3 left

💡 Hint

Common Mistakes

Adding priority when not needed

Using incorrect quotes around function name

When adding a function to a hook, if you only provide the function name, WordPress uses the default priority 10.

2fill in blank

medium

Complete the code to add a function to a WordPress filter hook with priority 20.

Wordpress

add_filter('the_content', [1]);

Drag options to blanks, or click blank then click option'

A'modify_content', 10

B'modify_content', 5

C'modify_content'

D'modify_content', 20

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to add priority argument

Using wrong priority number

To set a specific priority, include it as the second argument. Here, priority 20 is used.

3fill in blank

hard

Fix the error in the code to correctly specify the number of accepted arguments for the hook.

Wordpress

add_action('save_post', 'save_extra_data', 10, [1]);

Drag options to blanks, or click blank then click option'

A2

B1

C0

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Setting accepted arguments to 0 disables arguments

Setting too many arguments causes errors

The fourth argument specifies how many arguments the callback accepts. For 'save_post', usually 1 argument is passed.

4fill in blank

hard

Fill all three blanks to add a filter with priority 15 and accept 2 arguments.

Wordpress

add_filter('widget_title', [1], [2], [3]);

Drag options to blanks, or click blank then click option'

A'custom_title'

B15

C2

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping priority and accepted arguments

Using default priority when a specific one is needed

The second argument is the function name, the third is the priority, and the fourth is the number of accepted arguments. Here, priority 15 is set.

5fill in blank

hard

Fill all three blanks to add an action with function 'log_event', priority 5, and accept 3 arguments.

Wordpress

add_action('wp_footer', [1], [2], [3]);

Drag options to blanks, or click blank then click option'

A'log_event'

B5

C3

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of arguments

Using default priority instead of specified

The function name is first, then priority, then number of accepted arguments. This sets priority 5 and 3 arguments.