函数描述

获取指定 ID 的附件元信息字段。

使用方法

<?php wp_get_attachment_metadata( $attachment_id, $unfiltered ); ?>

参数

$attachment_id

(
integer) (
必需) 附件 ID

默认:
None

$unfiltered

(
boolean) (
可选) 如果为 true, 不运行 filters

默认: false

返回值

(
array|boolean)

附件元数据字段，获取失败，返回 False

元数据字段有：

width

(
integer) 附件宽度

height

(
integer) 附件高度

file

(
string) 附件相对于 `wp-content/uploads/` 的路径

sizes

(
array) 附件尺寸名称，每个数组包括 ‘file’, ‘width’, ‘height’, and ‘mime-type’

image_meta

(
array)

返回示例

Array
   (
       [width] => 2400
       [height] => 1559
       [file] => 2011/12/press_image.jpg
       [sizes] => Array
           (
               [thumbnail] => Array
                   (
                       [file] => press_image-150x150.jpg
                       [width] => 150
                       [height] => 150
                       [mime-type] => image/jpeg
                   )
               [medium] => Array
                   (
                       [file] => press_image-4-300x194.jpg
                       [width] => 300
                       [height] => 194
                       [mime-type] => image/jpeg
                   )
               [large] => Array
                   (
                       [file] => press_image-1024x665.jpg
                       [width] => 1024
                       [height] => 665
                       [mime-type] => image/jpeg
                   )
               [post-thumbnail] => Array
                   (
                       [file] => press_image-624x405.jpg
                       [width] => 624
                       [height] => 405
                       [mime-type] => image/jpeg
                   )
           )
       [image_meta] => Array
           (
               [aperture] => 5
               [credit] => 
               [camera] => Canon EOS-1Ds Mark III
                => 
               [created_timestamp] => 1323190643
               [copyright] => 
               [focal_length] => 35
               [iso] => 800
               [shutter_speed] => 0.016666666666667
               [title] => 
           )
   )