Woocommerce post\u缩略图\u html筛选器中的\u shop是否返回false

Woocommerce post\u缩略图\u html筛选器中的\u shop是否返回false,woocommerce,Woocommerce,我正在使用以下工具: add_filter('post_thumbnail_html', 'foo_filter_post_thumbnail_html', 10, 5 ); function foo_filter_post_thumbnail_html( $html, $post_id, $post_thumbnail_id, $size, $attr ) { var_dump(function_exists('is_shop')); var_dump(is_sh

我正在使用以下工具:

add_filter('post_thumbnail_html', 'foo_filter_post_thumbnail_html', 10, 5 );

function foo_filter_post_thumbnail_html( $html, $post_id, $post_thumbnail_id, $size, $attr ) { 

      var_dump(function_exists('is_shop'));
      var_dump(is_shop());

}
当在商店页面中时,对于上面的var_dump,它返回true,false

商业活动十分活跃