Structured data markup ready for WordPress single file.

structureddata-wp.php

<?php $autorname; ?>

	<?php while (have_posts()) : the_post(); ?>
		<?php
			$authorfname = get_the_author_meta('first_name');
			$authorlname = get_the_author_meta('last_name');
			$autorname = "{$authorfname} {$authorlname}";
			?>
	<?php endwhile; ?>

	<script type="application/ld+json">
		{
			"@context": "http://schema.org",
			"@type": "Article",
			"name": "<?php the_title(); ?>",
			"author": {
				"@type": "Person",
				"name": "<?php echo $autorname; ?>"
			},
			"datePublished": "<?php echo get_the_date('Y-m-d'); ?>",
			"articleSection": "blog",
			"url": "<?php the_permalink(); ?>",
			"publisher": {
				"@type": "Organization",
				"name": "OrganizationName"
			}
		}
	</script>