How to use get_header_image_tag filter in WordPress

Alright, folks! Today we’re diving into the intriguing world of WordPress hooks, specifically focusing on the get_header_image_tag filter. Imagine you want to tweak the header image markup of your WordPress site without diving deep into the core files. Here’s where this hook comes in handy. You can register it using add_filter in your theme’s functions.php or, even better, in a custom WordPress plugin. This way, updates won’t mess up your hard work!

Now, let’s get our hands dirty with some live examples.

Example 1: Basic Usage of get_header_image_tag

In this example, we’ll see how to use the get_header_image_tag filter to modify the header image markup.

    function weplugins_modify_get_header_image_tag_defaults($html, $header, $attr) {
        // Update the $html variable according to your website requirements and return this variable.
        return $html;
    }
    // Add the filter
    add_filter("get_header_image_tag", "weplugins_modify_get_header_image_tag_defaults", 10, 3);
    

Example 2: Removing a Hook

Sometimes, you want to remove a registered hook. Here’s how you can do it.

    remove_filter("get_header_image_tag", "weplugins_modify_get_header_image_tag_defaults", 10, 3);
    

Make sure to provide the same callback function name, priority, and number of arguments while removing the hook callback.

Example 3: Conditional Modification

Let’s say you want to conditionally modify the header image tag based on certain conditions. Here’s how you can approach it.

    function weplugins_conditional_modify_header_image($html, $header, $attr) {
        if (is_front_page()) {
            $html = str_replace('class="', 'class="front-page-header ', $html);
        }
        return $html;
    }
    add_filter("get_header_image_tag", "weplugins_conditional_modify_header_image", 10, 3);
    

Need customization? If you’re having any trouble using this hook or need some custom tweaks, feel free to Contact Us. WePlugins is here to help you out!