WordPress函数wp_get_attachment_metadata用于获取附件的元数据，例如图像的宽高、缩略图版本等。
wp_get_attachment_metadata( int $attachment_id, bool $unfiltered = false )
函数参数
$attachment_id
整数
附件的ID
$unfiltered
布尔值，默认值：false
是否运行过滤器。
函数返回值
Array
(
[width] => 768
[height] => 430
[file] => 2020/05/baidusrf-for-linux.webp
[sizes] => Array
(
[thumbnail] => Array
(
[file] => baidusrf-for-linux-320x200.jpg
[width] => 320
[height] => 200
[mime-type] => image/webp
)
)
[image_meta] => Array
(
[aperture] => 0
[credit] =>
[camera] =>
[caption] =>
[created_timestamp] => 0
[copyright] =>
[focal_length] => 0
[iso] => 0
[shutter_speed] => 0
[title] =>
[orientation] => 0
[keywords] => Array
(
)
)
)
扩展阅读
wp_get_attachment_metadata()函数位于：wp-includes/post.php
相关函数：
- get_post_meta()
- wp_get_attachment_image_src()
- wp_get_attachment_image_url()
- wp_get_attachment_image_sizes()
- wp_get_attachment_image_srcset()
- wp_get_attachment_image_attributes()
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