How to get meta value in wp_attachment_metadata

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I want to get wp_attachment_metadata in my own way. I want to separate the sizes (Thumbnail, Large, Medium, Small). The meta value on database looks like this: 

a:5:{s:5:"width";i:660;s:6:"height";i:320;s:4:"file";s:39:"2013/07/debut 
-busana-muslim-new-yor.jpg";s:5:"sizes";a:2:{s:9:"thumbnail";a:4:{s:4:"f 
ile";s:39:"debut-busana-muslim-new-yor-150x150.jpg";s:5:"width";i:150;s: 
6:"height";i:150;s:9:"mime-type";s:10:"image/jpeg";}s:6:"medium";a:4:{s: 
4:"file";s:39:"debut-busana-muslim-new-yor-300x145.jpg";s:5:"width";i:30 
0;s:6:"height";i:145;s:9:"mime-type";s:10:"image/jpeg";}}s:10:"image_met 
a";a:10:{s:8:"aperture";i:0;s:6:"credit";s:0:"";s:6:"camera";s:0:"";s:7: 
"caption";s:0:"";s:17:"created_timestamp";i:0;s:9:"copyright";s:0:"";s:1 
2:"focal_length";i:0;s:3:"iso";i:0;s:13:"shutter_speed";i:0;s:5:"title"; 
s:0:"";}}

Well, I am stuck. I don’t know how to separate that array. Anyone knows how to separate that array in order I can get the sizes and the URL of the images.

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1 comment

  1. There are two methods:

    1. get_post_meta()

      $attachment_meta = get_post_meta( $post->ID, '_wp_attachment_meta', true );

      Will return an array():

      $width = $attachment_meta['width'];

      That true as the third parameter is especially important in this case, since the metadata being queried is a serialized array. You need to return it as single, or you’re going to get an array returned, except the first item in that array will be the serialized array. Messy. Just pass true, and you’ll get your unserialized array returned.

    2. wp_get_attachment_metadata()

      This function is sort of a wrapper for the above get_post_meta() call.

      $attachment_meta = wp_get_attachment_metadata( $post->ID );

    In both cases, $post is the attachment, not the parent post to which the attachment is uploaded.

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