What is WordPress Hook: media_upload_mime_type_links
The media_upload_mime_type_links hook in WordPress is used to modify the list of allowed file types for media uploads. It allows developers to add or remove specific file types that can be uploaded through the media library.
Understanding the Hook: media_upload_mime_type_links
The media_upload_mime_type_links hook is located within the media.php file in the wp-admin directory. It is specifically used within the function wp_check_filetype_and_ext, which is responsible for checking the file type and extension of uploaded media files.
Hook Parameters (if applicable): media_upload_mime_type_links
The media_upload_mime_type_links hook does not accept any arguments or parameters.
Hook Doesn’t Work: media_upload_mime_type_links
If the media_upload_mime_type_links hook is not working as expected, it could be due to conflicts with other plugins or themes that are also modifying the allowed file types. It is recommended to deactivate other plugins and switch to a default theme to troubleshoot the issue.
Best Practices & Usage Notes (if applicable): media_upload_mime_type_links
When using the media_upload_mime_type_links hook, it is important to consider the security implications of allowing certain file types to be uploaded. It is recommended to only allow file types that are necessary for the website’s functionality and to regularly update and maintain the list of allowed file types.
Usage Example: media_upload_mime_type_links
“`php
function custom_mime_types( $mimes ) {
$mimes[‘svg’] = ‘image/svg+xml’;
return $mimes;
}
add_filter( ‘upload_mimes’, ‘custom_mime_types’ );
“`
In this example, the media_upload_mime_type_links hook is used to add the SVG file type to the list of allowed file types for media uploads. This code snippet can be added to the functions.php file of a WordPress theme or a custom plugin.
