Tutoriel WordPress Cuztom #2 par Pierre Saikali

<?php get_header(); ?>

    <div id="primary" class="site-content">
        <div id="content" role="main">

            <?php while ( have_posts() ) : the_post(); ?>

                <article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
                    <header class="entry-header">
                        <h1 class="entry-title"><?php the_title(); ?></h1>
                    </header>

                    <div class="entry-content">
                        <?php the_content(); ?>

                        <?php

                        $image_id = get_post_meta($post->ID, '_book_info_cover', true);
                        $image = wp_get_attachment_image_src($image_id, 'full');
                        $image_src = $image[0]; ?>

                        <img src="<?php echo esc_url($image_src); ?>" alt="<?php echo esc_attr(get_the_title($post->ID)); ?>" />

                        <p class="entry-meta">Publié le <?php echo get_post_meta($post->ID, '_book_info_publication_date', true); ?></p>

                        <?php

                        $authors = get_post_meta($post->ID, '_book_info_author', true);

                        foreach($authors as $author) {
                            $author_data = get_post($author);
                            $author_name = $author_data->post_title;
                            $author_bio = $author_data->post_content;

                            echo '<h4>' . $author_name . '</h4>';
                            echo '<p>' . $author_bio . '</p>';
                            echo '<hr>';
                        } ?>
                    </div><!-- .entry-content -->

                    <footer class="entry-meta">
                        <?php edit_post_link( __( 'Edit', 'twentytwelve' ), '<span class="edit-link">', '</span>' ); ?>
                    </footer><!-- .entry-meta -->
                </article><!-- #post -->


                <nav class="nav-single">
                    <h3 class="assistive-text"><?php _e( 'Post navigation', 'twentytwelve' ); ?></h3>
                    <span class="nav-previous"><?php previous_post_link( '%link', '<span class="meta-nav">' . _x( '&larr;', 'Previous post link', 'twentytwelve' ) . '</span> %title' ); ?></span>
                    <span class="nav-next"><?php next_post_link( '%link', '%title <span class="meta-nav">' . _x( '&rarr;', 'Next post link', 'twentytwelve' ) . '</span>' ); ?></span>
                </nav><!-- .nav-single -->

                <?php comments_template( '', true ); ?>

            <?php endwhile; // end of the loop. ?>

        </div><!-- #content -->
    </div><!-- #primary -->

<?php get_sidebar(); ?>
<?php get_footer(); ?>