What is WordPress Hook: wp_headers
The wp_headers hook in WordPress is used to add or modify HTTP headers before they are sent to the browser. This can be useful for various purposes such as adding custom headers for security, caching, or other functionality.
Understanding the Hook: wp_headers
The wp_headers hook is located within the WordPress process where headers are being prepared to be sent to the browser. It allows developers to intervene and modify the headers before they are finalized and sent along with the response.
Hook Parameters (if applicable): wp_headers
The wp_headers hook does not accept any specific parameters. It simply provides a way to modify the headers array before it is sent to the browser.
Hook Doesn’t Work: wp_headers
If the wp_headers hook doesn’t seem to be working, it could be due to other plugins or themes modifying the headers after your function has run. It’s important to ensure that your function is being called at the right time in the WordPress process to effectively modify the headers.
Best Practices & Usage Notes (if applicable): wp_headers
When using the wp_headers hook, it’s important to consider the impact on performance and compatibility with other plugins or themes. It’s best to use this hook sparingly and only when necessary, as it can affect the behavior of the entire website.
wp_headers Usage Example: wp_headers
“`php
function add_custom_header() {
header(‘X-My-Custom-Header: MyCustomValue’);
}
add_action(‘wp_headers’, ‘add_custom_header’);
“`
In this example, the wp_headers hook is used to add a custom HTTP header to the response before it is sent to the browser. This can be useful for various purposes such as adding custom security headers or controlling caching behavior.