get_bloginfo( string $show = '', string $filter = 'raw' )

function get_bloginfo( $show = '', $filter = 'raw' ) {
	switch( $show ) {
		case 'home' : // DEPRECATED
		case 'siteurl' : // DEPRECATED
			_deprecated_argument( __FUNCTION__, 'WP-2.2.0', sprintf(
				/* translators: 1: 'siteurl'/'home' argument, 2: bloginfo() function name, 3: 'url' argument */
				__( 'The %1$s option is deprecated for the family of %2$s functions. Use the %3$s option instead.' ),
				'<code>' . $show . '</code>',
				'<code>bloginfo()</code>',
				'<code>url</code>'
			) );
		case 'url' :
			$output = home_url();
			break;
		case 'wpurl' :
			$output = site_url();
			break;
		case 'description':
			$output = get_option('blogdescription');
			break;
		case 'rdf_url':
			$output = get_feed_link('rdf');
			break;
		case 'rss_url':
			$output = get_feed_link('rss');
			break;
		case 'rss2_url':
			$output = get_feed_link('rss2');
			break;
		case 'atom_url':
			$output = get_feed_link('atom');
			break;
		case 'comments_atom_url':
			$output = get_feed_link('comments_atom');
			break;
		case 'comments_rss2_url':
			$output = get_feed_link('comments_rss2');
			break;
		case 'pingback_url':
			$output = site_url( 'xmlrpc.php' );
			break;
		case 'stylesheet_url':
			$output = get_stylesheet_uri();
			break;
		case 'stylesheet_directory':
			$output = get_stylesheet_directory_uri();
			break;
		case 'template_directory':
		case 'template_url':
			$output = get_template_directory_uri();
			break;
		case 'admin_email':
			$output = get_option('admin_email');
			break;
		case 'charset':
			$output = get_option('blog_charset');
			if ('' == $output) $output = 'UTF-8';
			break;
		case 'html_type' :
			$output = get_option('html_type');
			break;
		case 'version':
			global $wp_version;
			$output = $wp_version;
			break;
		case 'language':
			/* translators: Translate this to the correct language tag for your locale,
			 * see https://www.w3.org/International/articles/language-tags/ for reference.
			 * Do not translate into your own language.
			 */
			$output = __( 'html_lang_attribute' );
			if ( 'html_lang_attribute' === $output || preg_match( '/[^a-zA-Z0-9-]/', $output ) ) {
				$output = is_admin() ? get_user_locale() : get_locale();
				$output = str_replace( '_', '-', $output );
			}
			break;
		case 'text_direction':
			_deprecated_argument( __FUNCTION__, 'WP-2.2.0', sprintf(
				/* translators: 1: 'text_direction' argument, 2: bloginfo() function name, 3: is_rtl() function name */
				__( 'The %1$s option is deprecated for the family of %2$s functions. Use the %3$s function instead.' ),
				'<code>' . $show . '</code>',
				'<code>bloginfo()</code>',
				'<code>is_rtl()</code>'
			) );
			if ( function_exists( 'is_rtl' ) ) {
				$output = is_rtl() ? 'rtl' : 'ltr';
			} else {
				$output = 'ltr';
			}
			break;
		case 'name':
		default:
			$output = get_option('blogname');
			break;
	}

	$url = true;
	if (strpos($show, 'url') === false &&
		strpos($show, 'directory') === false &&
		strpos($show, 'home') === false)
		$url = false;

	if ( 'display' == $filter ) {
		if ( $url ) {
			/**
			 * Filters the URL returned by get_bloginfo().
			 *
			 * @since WP-2.0.5
			 *
			 * @param mixed $output The URL returned by bloginfo().
			 * @param mixed $show   Type of information requested.
			 */
			$output = apply_filters( 'bloginfo_url', $output, $show );
		} else {
			/**
			 * Filters the site information returned by get_bloginfo().
			 *
			 * @since WP-0.71
			 *
			 * @param mixed $output The requested non-URL site information.
			 * @param mixed $show   Type of information requested.
			 */
			$output = apply_filters( 'bloginfo', $output, $show );
		}
	}

	return $output;
}