Online PHP editor | refs for jXIkF

<?php $tags = array( array('tag_id' => 1, 'tag_name' => 'Hello', 'album_id' => 1), array('tag_id' => 1, 'tag_name' => 'Hello', 'album_id' => 2), array('tag_id' => 2, 'tag_name' => 'World', 'album_id' => 1), array('tag_id' => 2, 'tag_name' => 'World', 'album_id' => 2), array('tag_id' => 3, 'tag_name' => 'Again', 'album_id' => 3) ); $org_tags = array(); print_r(array_column($tags, 'album_id'));