What is WordPress Hook: wp_unique_filename

The wp_unique_filename hook is a function in WordPress that is used to generate a unique filename for a given path. This hook is commonly used when uploading files to the media library or when creating new files within the WordPress environment.

Understanding the Hook: wp_unique_filename

The wp_unique_filename hook is located within the wp_unique_filename function in the WordPress core. It is responsible for ensuring that file names are unique to prevent overwriting existing files with the same name.

Hook Parameters (if applicable): wp_unique_filename

The wp_unique_filename hook does not accept any specific parameters. It simply generates a unique filename based on the provided path and file name.

Hook Doesn’t Work: wp_unique_filename

If the wp_unique_filename hook is not working as expected, it may be due to conflicts with other plugins or themes that modify file upload functionality. It is recommended to deactivate other plugins and switch to a default theme to troubleshoot the issue.

Best Practices & Usage Notes (if applicable): wp_unique_filename

When using the wp_unique_filename hook, it is important to note that it only applies to file names and does not handle file content. Additionally, developers should be cautious when modifying the default behavior of this hook to avoid unintended consequences.

Usage Example: wp_unique_filename

“`php
$filename = wp_unique_filename( $upload_path, $filename );
“`