Title: WP_Sitemaps_Renderer::render_index
Published: August 11, 2020
Last modified: May 20, 2026

---

# WP_Sitemaps_Renderer::render_index( array $sitemaps )

## In this article

 * [Parameters](https://developer.wordpress.org/reference/classes/wp_sitemaps_renderer/render_index/?output_format=md#parameters)
 * [Source](https://developer.wordpress.org/reference/classes/wp_sitemaps_renderer/render_index/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/wp_sitemaps_renderer/render_index/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/classes/wp_sitemaps_renderer/render_index/?output_format=md#changelog)

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

Renders a sitemap index.

## 󠀁[Parameters](https://developer.wordpress.org/reference/classes/wp_sitemaps_renderer/render_index/?output_format=md#parameters)󠁿

 `$sitemaps`arrayrequired

Array of sitemap URLs.

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

    ```php
    public function render_index( $sitemaps ) {
    	header( 'Content-Type: application/xml; charset=UTF-8' );

    	$this->check_for_simple_xml_availability();

    	$index_xml = $this->get_sitemap_index_xml( $sitemaps );

    	if ( ! empty( $index_xml ) ) {
    		// All output is escaped within get_sitemap_index_xml().
    		echo $index_xml;
    	}
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/sitemaps/class-wp-sitemaps-renderer.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/sitemaps/class-wp-sitemaps-renderer.php#L125)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/sitemaps/class-wp-sitemaps-renderer.php#L125-L136)

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

| Uses | Description | 
| [WP_Sitemaps_Renderer::check_for_simple_xml_availability()](https://developer.wordpress.org/reference/classes/wp_sitemaps_renderer/check_for_simple_xml_availability/)`wp-includes/sitemaps/class-wp-sitemaps-renderer.php` |

Checks for the availability of the SimpleXML extension and errors if missing.

  | 
| [WP_Sitemaps_Renderer::get_sitemap_index_xml()](https://developer.wordpress.org/reference/classes/wp_sitemaps_renderer/get_sitemap_index_xml/)`wp-includes/sitemaps/class-wp-sitemaps-renderer.php` |

Gets XML for a sitemap index.

  |

## 󠀁[Changelog](https://developer.wordpress.org/reference/classes/wp_sitemaps_renderer/render_index/?output_format=md#changelog)󠁿

| Version | Description | 
| [5.5.0](https://developer.wordpress.org/reference/since/5.5.0/) | Introduced. |

## User Contributed Notes

You must [log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fdeveloper.wordpress.org%2Freference%2Fclasses%2Fwp_sitemaps_renderer%2Frender_index%2F)
before being able to contribute a note or feedback.