Query parameters in Wordpress - Cheat Sheet & Quick Revision

Recall & Review

beginner

What are query parameters in WordPress?

Query parameters are parts of a URL that pass extra information to WordPress to filter or modify the content shown on a page.

beginner

How do you access query parameters in WordPress PHP code?

You can use the global $wp_query object or functions like get_query_var() to get query parameters in WordPress.

intermediate

What is the role of add_query_arg() in WordPress?

add_query_arg() helps you add or modify query parameters in a URL easily without breaking the URL structure.

intermediate

Why should you sanitize query parameters in WordPress?

Sanitizing query parameters protects your site from security risks like SQL injection by cleaning the input before use.

intermediate

How can query parameters affect WordPress loops?

Query parameters can change which posts or pages the WordPress loop shows by filtering content based on categories, tags, or custom fields.

Which function is used to safely add query parameters to a URL in WordPress?

A sanitize_text_field()

B get_query_var()

C add_query_arg()

D wp_query()

add_query_arg() is designed to add or modify query parameters in URLs safely.

How do you retrieve a query parameter named 'category' in WordPress PHP?

A get_post_meta('category')

B add_query_arg('category')

C query_posts('category')

D get_query_var('category')

get_query_var('category') fetches the value of the 'category' query parameter.

Why is sanitizing query parameters important?

A To prevent security vulnerabilities

B To improve page loading speed

C To change the URL structure

D To add more parameters

Sanitizing input helps prevent security issues like SQL injection.

Which global object holds query parameters and query info in WordPress?

A $post

B $wp_query

C $wpdb

D $wp_rewrite

$wp_query contains the current query parameters and results.

What happens if you add a query parameter to filter posts by category?

A WordPress shows posts only from that category

B WordPress ignores the parameter

C WordPress deletes posts from other categories

D WordPress changes the site theme

Query parameters can filter posts shown, like showing only posts from a specific category.

Explain how query parameters work in WordPress and how you can use them to filter content.

Think about URLs and how extra info changes what you see.

Describe the importance of sanitizing query parameters and how to do it in WordPress.

Focus on keeping your site safe from bad input.