apply_filters( ‘language_attributes’, string $output, string $doctype )

过滤器：：过滤要在html标记中显示的语言属性。
Filter Hook: Filters the language attributes for display in the html tag.

目录锚点：#参数#源码

参数（Parameters）

源码（Source）

/**
 * Displays the language attributes for the html tag.
 *
 * Builds up a set of html attributes containing the text direction and language
 * information for the page.
 *
 * @since 2.1.0
 * @since 4.3.0 Converted into a wrapper for get_language_attributes().
 *
 * @param string $doctype Optional. The type of html document. Accepts 'xhtml' or 'html'. Default 'html'.
 */
function language_attributes( $doctype = 'html' ) {
	echo get_language_attributes( $doctype );
}