article_microdata.php

function dtrm_add_article_microdata() {
    if ( 'post' !== get_post_type() && ! is_singular() ) {
        return;
    }

    $current_post_id = get_queried_object_id();
    ?>
    <script type=application/ld+json>
        {
          "@context" : "http://schema.org",
          "@type" : "Article",
            "headline" : "<?php echo esc_html( get_the_title( $current_post_id ) ); ?>",
            "articleSection" : "нужно уточнить что это вообще",
            "image" : ["<?php echo get_the_post_thumbnail_url( $current_post_id, 'full' ); ?>"],
            "datePublished" : "<?php echo get_the_date( 'c' ); ?>",
            "dateModified" : "<?php echo get_the_modified_date( 'c' ); ?>",
            "publisher" : {
                "@type" : "Organization",
                "name" : "Dataroom-Providers.org",
                "logo" : {
                    "type" : "ImageObject",
                    "url" : "<?php echo get_stylesheet_directory_uri() . '/path/to/logo'; ?>"
                }
            },
            "description" : "<?php echo get_the_excerpt( $current_post_id ); ?>"
        }
    </script>
<?php
}

add_action( 'wp_footer', 'dtrm_add_article_microdata' );