Snippet: alternate hreflang for head

  • Resolved Xtrace

    (@xtrace)


    8 years, 8 months ago

    Here’s just a little snippet that you can use to add the language urls to you page head, which is for search engine’s to serve hits for a user in his own language. You can add the code to your theme’s functions.php file.

    add_action('wp_head','wp_head_alternate_lang', 1);

function wp_head_alternate_lang() {

	$output = array();

	if (function_exists('the_bilingual_link')) {

		$args = array(
			"echo" => false,
			"url_only" => true
		);
		$blg = get_option( 'BilingualLinkerGeneral' );

		if ($blg['numberoflanguages'] > 0) {

			for ($i=1;$i<=$blg['numberoflanguages'];$i++) {

				$langArgs = $args;
				$langArgs['language_id'] = $i;
				$altLinkResult = the_bilingual_link($langArgs);

				if ($altLinkResult !== '' && $altLinkResult !== 'https://' && $altLinkResult !== 'https://') {

					$output[] = '<link rel="alternate" hreflang="' . $blg["language" . $i . "langcode"] . '" href="' . $altLinkResult . '" />';
				}
			}
		}
	}

	if (!empty($output)) {

		echo "<!-- alternate languages -->\n" . implode("\n", $output);
	}
}

    Example output in the head:

    <!DOCTYPE html>
    <html lang=”en”>
    <head>
    <title>website title</title>
    <!– alternate languages –>
    <link rel=”alternate” hreflang=”de” href=”https://www.yoursite.de&#8221; />
    <link rel=”alternate” hreflang=”es” href=”https://es.yoursite.com&#8221; />
    </head>

    where the href’s are entered in the box on your page/post

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