编辑:我已经设法让这个类工作并且我已经更新了正确的代码。我不想在值的末尾使用 [0]。有什么办法可以改进这段代码?
此类检索特定帖子的所有自定义键。目前我用它来关联图像,我在我的帖子中定义了三个键:'related_image'、'related_image_wide' 和 'image_alt_text。
编辑2:我终于设法以我想要的方式获得价值。我希望这对任何发现它的人都有用。代码已更新。
class article {
private $alternative_text;
private $custom_fields = array();
public function __construct($post)
{
$val = array();
$custom_field_keys = get_post_custom_keys();
foreach ( $custom_field_keys as $key => $value )
{
// Custom_fields["a"] gets the value of the custom field "a"
$val = get_post_custom_values($value);
$this->custom_fields[$value] = $val[0];
}
$this->alternative_text = $this->custom_fields["image_alt_text"];
}
public function relatedImage($type)
{
// Standard image to be shown with article
if($type == 'normal')
return $this->imageURL($this->custom_fields["related_image"]);
// Wide image to be shown with article.
if($type == 'wide')
return $this->imageURL($this->custom_fields["related_image_wide"]);
// Alternative image. Often used in article listing and not in main article
if($type == 'alt')
return $this->imageURL($this->custom_fields["related_image_alternative"]);
}
private function imageURL($imgPath)
{
return '<img src="' . get_option('home') . '/wp-content/uploads' . $imgPath .'" alt="' . $this->alternative_text . '" title="' . $this->alternative_text . '" />';
}
}
这就是我在模板代码中所做的:
//This is inside The Loop
$article = new article($post);
echo $article->relatedImage("normal");