How to make get_header() call a custom header file located in a sub-folder of the theme?

From a PHP template file located in a sub-folder of my WP theme folder (`my_theme/subfolder/my_file.php`) I want to use `get_header()` and call a custom `header-new.php` located in the same sub-folder.

Instead, `get_header(header-new)` loads `header.php` located in my theme root folder. How to fix that problem?

you can use :

get_template_part('header-new.php');

>reference here: >https://developer.wordpress.org/reference/functions/get_template_part/

You are correct to use get_header() function. However, as per [documentation][1] you should pass the name of the custom header in the specific format - only the part that comes between 'header-' and '.php'. E.g. for the custom header in the file:

header-custom.php

you should use:

get_header('custom');

But that's not all. It is important to remember that the custom header file should be placed in 1 or 2 specific directories, depending on whether you're working on parent or child theme:

1. Parent theme: you should place it either in the same directory as the page template or the 'root' theme directory (specifically the same directory where your style.css is)
2. Child theme: you have to place it in the 'root' child theme directory

get_header() function calls [locate_template() function][2], which searches for the custom header file in those 2 directories. If it doesn't find the file, it defaults to 'header.php'.


[1]:

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[2]:

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