thumbnail
<?php
//img出力
if ( has_post_thumbnail() ) {
the_post_thumbnail( 'pic190' );
}else {
// echo '<img src="' . get_stylesheet_directory_uri().'/img/news/img_eyecatch01.png' . '" alt="">';
echo '<img src="https://unsplash.it/1440/660?image=' . rand(1,900) . '">';//ランダムで画像表示
}
?>
<?php //背景画像 ?>
<?php if ( has_post_thumbnail() ): ?>
<?php
$img = wp_get_attachment_image_src( get_post_thumbnail_id(), 'pic410' );
$img_src = $img[0];
?>
<div style="background-image: url(<?php echo $img_src; ?>)"></div>
<?php else: ?>
<div style="background-image: url(https://unsplash.it/1440/660?image=<?php echo rand(1,900); ?>"></div>
<?php endif; ?>