';
function build_sitemap_loc( $loc , $article_alternates ) {
// build a sitemap section based on an article and its alternates
$output = '';
$output .= "\t\n";
$output .= "\t\t$loc\n";
foreach ( $article_alternates as $article_alternate ) {
$output .= "\t\t\n";
$output .= "\n";
foreach ( $article_alternates as $article_alternate ) {
$output .= build_sitemap_loc( "https://{$article_alternate['language']}.wikipedia.org/wiki/{$article_alternate['value']}", $article_alternates );
}
$output .= "";
file_put_contents( 'sitemap.xml', $output );
?>