Source

File: wp-includes/general-template.php

function get_archives_link( $url, $text, $format = 'html', $before = '', $after = '', $selected = false ) {
	$text         = wptexturize( $text );
	$url          = esc_url( $url );
	$aria_current = $selected ? ' aria-current="page"' : '';

	if ( 'link' === $format ) {
		$link_html = "\t<link rel='archives' title='" . esc_attr( $text ) . "' href='$url' />\n";
	} elseif ( 'option' === $format ) {
		$selected_attr = $selected ? " selected='selected'" : '';
		$link_html     = "\t<option value='$url'$selected_attr>$before $text $after</option>\n";
	} elseif ( 'html' === $format ) {
		$link_html = "\t<li>$before<a href='$url'$aria_current>$text</a>$after</li>\n";
	} else { // Custom.
		$link_html = "\t$before<a href='$url'$aria_current>$text</a>$after\n";
	}

	/**
	 * Filters the archive link content.
	 *
	 * @since 2.6.0
	 * @since 4.5.0 Added the `$url`, `$text`, `$format`, `$before`, and `$after` parameters.
	 * @since 5.2.0 Added the `$selected` parameter.
	 *
	 * @param string $link_html The archive HTML link content.
	 * @param string $url       URL to archive.
	 * @param string $text      Archive text description.
	 * @param string $format    Link format. Can be 'link', 'option', 'html', or custom.
	 * @param string $before    Content to prepend to the description.
	 * @param string $after     Content to append to the description.
	 * @param bool   $selected  True if the current page is the selected archive.
	 */
	return apply_filters( 'get_archives_link', $link_html, $url, $text, $format, $before, $after, $selected );
}