What is WordPress Hook: image_get_intermediate_size
The image_get_intermediate_size hook in WordPress is used to retrieve the URL of an intermediate image size for a given image attachment. This hook allows developers to modify or customize the intermediate image size URL before it is returned.
Understanding the Hook: image_get_intermediate_size
The image_get_intermediate_size hook is located within the wp-includes/media.php file in WordPress. It is specifically used within the image_get_intermediate_size() function, which is responsible for retrieving the URL of the intermediate image size.
Hook Parameters (if applicable): image_get_intermediate_size
The image_get_intermediate_size hook accepts two parameters: $image_url and $attachment_id. The $image_url parameter is the URL of the original image, and the $attachment_id parameter is the ID of the image attachment. These parameters allow developers to manipulate the intermediate image size URL based on the original image and attachment ID.
Hook Doesn’t Work: image_get_intermediate_size
If the image_get_intermediate_size hook doesn’t work as expected, it may be due to incorrect usage or conflicts with other functions or plugins. To troubleshoot, developers should ensure that the hook is being used within the appropriate context and that any conflicting code is addressed.
Best Practices & Usage Notes (if applicable): image_get_intermediate_size
When using the image_get_intermediate_size hook, it’s important to consider the impact on performance, as modifying the intermediate image size URL could potentially affect page load times. Additionally, developers should be mindful of any other functions or plugins that may also manipulate image sizes to avoid conflicts.
Usage Example: image_get_intermediate_size
“`php
function custom_image_size_url($image_url, $attachment_id) {
// Modify the intermediate image size URL here
return $image_url;
}
add_filter(‘image_get_intermediate_size’, ‘custom_image_size_url’, 10, 2);
“`