WordPress从循环外部检索自定义字段

Posted 2021-02-26

<ul class="feature-images">
		<?php
		global $wpdb;
 
		$sql = "SELECT wposts.*
			FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta
			WHERE wposts.ID = wpostmeta.post_id
			AND wpostmeta.meta_key = 'lab-image'
			AND wposts.post_status = 'publish'
			AND wposts.post_type = 'post'
			ORDER BY wposts.post_date DESC LIMIT 3";
 
		$pageposts = $wpdb->get_results($sql, OBJECT);
		$output = $pre_html;
 
		foreach ($pageposts as $post) : setup_postdata($post);  ?>
			<li><a href="<?php the_permalink(); ?>" title="Link to <?php the_title(); ?>">
			<img src="<?php echo get_post_meta($post->ID, "lab-image", $single = true); ?>" alt="<?php the_title(); ?>" /></a></li>
		<?php endforeach; ?>
 
		</ul>