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//lấy địa chỉ ảnh full.
wp_get_attachment_url( get_post_thumbnail_id($post->ID) );
//get image attributes
wp_get_attachment_image_src($attachment_id, 'full');
->result: [0] => url
[1] => width
[2] => height
[3] => boolean: true if $url is a resized image, false if it is the original or if no image is available.
//Returns an HTML image element: syntax: wp_get_attachment_image( $attachment_id, $size, $icon, $attr );
echo wp_get_attachment_image( $attachment->ID, 'full' );
//img tag bởi id
echo wp_get_attachment_image('34'); //<img src="" title=".."..
//lấy ảnh bởi id
get_media_item('2');
//lấy metadata của ảnh bởi id
wp_get_attachment_metadata('34'); //array(..)
->result:
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
[caption] =>
[created_timestamp] => 1323190643
[copyright] =>
[focal_length] => 35
[iso] => 800
[shutter_speed] => 0.016666666666667
[title] =>
)
)
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