[英]How to get value of a specific key from multidimensional array in PHP
I get images from its post id in postmeta table我从 postmeta 表中的 post id 中获取图像
$kbe_img_meta = get_post_meta($foo_img_ID, "_wp_attachment_metadata", true);
echo "<pre>";
print_r($foo_img_meta);
echo "</pre>";
Here is my multidimensional array result:这是我的多维数组结果:
Array
(
[width] => 800
[height] => 640
[file] => 2014/09/Wallpaper_29.jpg
[sizes] => Array
(
[thumbnail] => Array
(
[file] => Wallpaper_29-150x150.jpg
[width] => 150
[height] => 150
[mime-type] => image/jpeg
)
[medium] => Array
(
[file] => Wallpaper_29-300x240.jpg
[width] => 300
[height] => 240
[mime-type] => image/jpeg
)
[post-thumbnail] => Array
(
[file] => Wallpaper_29-624x499.jpg
[width] => 624
[height] => 499
[mime-type] => image/jpeg
)
)
[image_meta] => Array
(
[aperture] => 0
[credit] =>
[camera] =>
[caption] =>
[created_timestamp] => 0
[copyright] =>
[focal_length] => 0
[iso] => 0
[shutter_speed] => 0
[title] =>
[orientation] => 1
)
)
Array
(
[width] => 800
[height] => 480
[file] => 2014/09/Wallpaper_37.jpg
[sizes] => Array
(
[thumbnail] => Array
(
[file] => Wallpaper_37-150x150.jpg
[width] => 150
[height] => 150
[mime-type] => image/jpeg
)
[medium] => Array
(
[file] => Wallpaper_37-300x180.jpg
[width] => 300
[height] => 180
[mime-type] => image/jpeg
)
[post-thumbnail] => Array
(
[file] => Wallpaper_37-624x374.jpg
[width] => 624
[height] => 374
[mime-type] => image/jpeg
)
)
[image_meta] => Array
(
[aperture] => 0
[credit] =>
[camera] =>
[caption] =>
[created_timestamp] => 0
[copyright] =>
[focal_length] => 0
[iso] => 0
[shutter_speed] => 0
[title] =>
[orientation] => 1
)
)
Array
(
[width] => 800
[height] => 640
[file] => 2014/09/Wallpaper_33.jpg
[sizes] => Array
(
[thumbnail] => Array
(
[file] => Wallpaper_33-150x150.jpg
[width] => 150
[height] => 150
[mime-type] => image/jpeg
)
[medium] => Array
(
[file] => Wallpaper_33-300x240.jpg
[width] => 300
[height] => 240
[mime-type] => image/jpeg
)
[post-thumbnail] => Array
(
[file] => Wallpaper_33-624x499.jpg
[width] => 624
[height] => 499
[mime-type] => image/jpeg
)
)
[image_meta] => Array
(
[aperture] => 0
[credit] =>
[camera] =>
[caption] =>
[created_timestamp] => 0
[copyright] =>
[focal_length] => 0
[iso] => 0
[shutter_speed] => 0
[title] =>
[orientation] => 1
)
)
Now I only want [file]
value from [thumbnail]
, [medium]
and [post-thumbnail]
, so i delete images from folder.现在我只想要来自[thumbnail]
、 [medium]
和[post-thumbnail]
[file]
值,所以我从文件夹中删除了图像。
Note: I only want [file] value.注意:我只想要 [file] 值。
You can use the following syntax:您可以使用以下语法:
$file1 = $foo_img_meta['sizes']['thumbnail']['file'];
$file2 = $foo_img_meta['sizes']['medium']['file'];
$file3 = $foo_img_meta['sizes']['post-thumbnail']['file'];
echo $file1." _thumbnail"."<br />";
echo $file2." _medium"."<br />";
echo $file3." _post-thumbnail"."<br />";}
In case you are not aware of the sizes you'll be encountering, use the following instead:如果您不知道将遇到的尺寸,请改用以下内容:
foreach ($result['sizes'] as $size_id => $size) {
$file = $size['file'];
// Delete File
}
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