WordPress at a glance
function is not described

get_media_items() WP 2.5.0

Retrieve HTML for media items of post gallery.

The HTML markup retrieved will be created for the progress of SWF Upload component. Will also create link for showing and hiding the form to modify the image attachment.

  • Global. WP_Query. $wp_the_query

No Hooks.

Return

String.

Usage

get_media_items( $post_id, $errors );
$post_id(int) (required)
Post ID.
$errors(array) (required)
Errors for attachment, if any.

Code of get media items: wp-admin/includes/media.php WP 5.2.1

<?php
function get_media_items( $post_id, $errors ) {
	$attachments = array();
	if ( $post_id ) {
		$post = get_post( $post_id );
		if ( $post && $post->post_type == 'attachment' ) {
			$attachments = array( $post->ID => $post );
		} else {
			$attachments = get_children(
				array(
					'post_parent' => $post_id,
					'post_type'   => 'attachment',
					'orderby'     => 'menu_order ASC, ID',
					'order'       => 'DESC',
				)
			);
		}
	} else {
		if ( is_array( $GLOBALS['wp_the_query']->posts ) ) {
			foreach ( $GLOBALS['wp_the_query']->posts as $attachment ) {
				$attachments[ $attachment->ID ] = $attachment;
			}
		}
	}

	$output = '';
	foreach ( (array) $attachments as $id => $attachment ) {
		if ( $attachment->post_status == 'trash' ) {
			continue;
		}
		if ( $item = get_media_item( $id, array( 'errors' => isset( $errors[ $id ] ) ? $errors[ $id ] : null ) ) ) {
			$output .= "\n<div id='media-item-$id' class='media-item child-of-$attachment->post_parent preloaded'><div class='progress hidden'><div class='bar'></div></div><div id='media-upload-error-$id' class='hidden'></div><div class='filename hidden'></div>$item\n</div>";
		}
	}

	return $output;
}