Site search is an important feature for any kind of website to help users find the necessary resources quickly without going through the entire site's content. WordPress provides a built-in search feature for searching posts, pages, and custom post-type content. In advanced applications, we may need to use the search differently from the default behavior. In these applications, we may need to implement requirements such as the following:

• Restrict searching for certain user types
• Build different search forms to search for different content
• Limit the search to selected post types

So, we need to alter the default search with custom conditions to generate custom search results. Built-in WordPress hooks can be used to customize the search through a custom plugin.

In this recipe, we are going to customize the behavior of WordPress search for various situations by modifying the existing WordPress filters used to retrieve the search results.