Title: RSSCache::file_name
Published: April 25, 2014
Last modified: February 24, 2026

---

# RSSCache::file_name( $url )

## In this article

 * [Source](https://developer.wordpress.org/reference/classes/rsscache/file_name/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/rsscache/file_name/?output_format=md#related)

[ Back to top](https://developer.wordpress.org/reference/classes/rsscache/file_name/?output_format=md#wp--skip-link--target)

## 󠀁[Source](https://developer.wordpress.org/reference/classes/rsscache/file_name/?output_format=md#source)󠁿

    ```php
    function file_name ($url) {
    	return md5( $url );
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/rss.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/rss.php#L818)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/rss.php#L818-L820)

## 󠀁[Related](https://developer.wordpress.org/reference/classes/rsscache/file_name/?output_format=md#related)󠁿

| Used by | Description | 
| [RSSCache::set()](https://developer.wordpress.org/reference/classes/rsscache/set/)`wp-includes/rss.php` |  | 
| [RSSCache::get()](https://developer.wordpress.org/reference/classes/rsscache/get/)`wp-includes/rss.php` |  | 
| [RSSCache::check_cache()](https://developer.wordpress.org/reference/classes/rsscache/check_cache/)`wp-includes/rss.php` |  |

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