获取封面图 Feature Image

<img src="

 <?php 

 if (has_post_thumbnail($post->ID)) : 

 $image = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), 'single-post-thumbnail'); 

 echo esc_url($image[0]); 

 else:

 echo get_template_directory_uri() .'/images/1.jpg';

 endif; 

 ?>" alt="<?php the_title(); ?>" class="rounded">