wordpress - WordPress中图像尺寸为960 * 250时如何使特色图像显示

Question

我正在定制一个 WordPress 主题，并面临一些特色图像的问题。

如果帖子或页面上有特色图片 - 并且 - 该特色图片为 960x250，则特色图片显示为该帖子或页面上的标题。

如果特色图片不是 960x250 则该特色图片应显示在主要内容区域中，水平填充空间（就像现在在帖子中一样）当且仅当特色图片为 960x250 时，它仅显示为标题，不在内容中

Answer 1

正确的写作方式是

if ( has_post_thumbnail() ) {
  $headerImg = get_the_post_thumbnail($post->ID, array(960,250) );
}

has_post_thumbnail()只接受可选的 id

已编辑

$headerImg = wp_get_attachment_image_src($post->ID, array(960,250));

if (has_post_thumbnail() && $headerImg[1] == 960 && $headerImg[2] == 250) {
 // if it is output is 960x250 in size
 $headerImg = the_post_thumbnail(array(960,250));
} else {
 // if it isn't then show the medium or some other size image
 $contentImg = the_post_thumbnail('medium');
}

进一步编辑

$headerImg = get_the_post_thumbnail($post->ID, array(960,250) );
if (has_post_thumbnail() && !empty($headerImg) ){
 #This checks to see if the post has the thumbnail and the image is 960x250.
 #Therefore you can now add it to the header.
 $headerImg = get_the_post_thumbnail($post->ID, array(960,250) );
} elseif (has_post_thumbnail() && empty($headerImg) {
   #This checks to see if thumbnail exists and works if 960x250 is empty
} else {
 #Place code here if the featured image doesnt exist
}