Get the search element only on 404

Question

I know get_sidebar( ); is used to get the widget sidebar , but how do I request one element from it?

For instance, if I want to show the search or most read only? I know there is a way to specify the sidebar for page like get_sidebar('404' ); for example

How do I do this? I've created the 404.php page. Do I have to register other sidebar or do I have to create "404_sidebar.php"?

So, how do I get the "search" element only when my website return error 404?

Answer 1

You can include the search form in your 404.php file using the get_search_form() function.

Using get_sidebar( '404' ); would look for a file called sidebar-404.php and fall back on sidebar.php if needed. get_sidebar()