Introduce a function to return image attributes of a specific attachment

[jredfern]

It's useful to get all the data relating to an image via one source:

/**
* returns an array containing attributes for an image stored in the database
 * $image_id : id of the image to query
 * $size : size of the image, can be 'thumbnail', 'medium', 'large' or 'full'
 */	
function get_image_by_id($image_id, $size) {
	$image = get_post($image_id);

	$imageObj = array();
	$imagearray = wp_get_attachment_image_src($image->ID, $size, false);
	$imageObj['src'] = $imagearray[0];
	$imageObj['width'] = $imagearray[1];
	$imageObj['height'] = $imagearray[2];
	$imageObj['id'] = $image->ID;
	$imageObj['title'] = $image->post_title;
	$imageObj['caption'] = $image->post_excerpt;
	$imageObj['description'] = $image->post_content;
	$imageObj['alt'] = get_post_meta($image->ID, '_wp_attachment_image_alt', true);

	return $imageObj;
}

I wish I would have found this earlier. It is so much simpler than the solution I was working on. However, think it would helpful to be able to access the data in an object format $object->variable. Also, setting a default value for $size would allow easier access to image details such as caption and description when the size doesn't matter. Here are the changes I made:

function get_image_by_id($image_id, $size = 'full') {
	$image = get_post($image_id);
	$imagearray = wp_get_attachment_image_src($image->ID, $size, false);
	$imageObj->src = $imagearray[0];
	$imageObj->width = $imagearray[1];
	$imageObj->height = $imagearray[2];
	$imageObj->id = $image->ID;
	$imageObj->title = $image->post_title;
	$imageObj->caption = $image->post_excerpt;
	$imageObj->description = $image->post_content;
	$imageObj->alt = get_post_meta($image->ID, '_wp_attachment_image_alt', true);

	return $imageObj;
}

Let me know if there's anything else I can do to help this process along.

Needs a formal patch.

Duplicate: #21851

Creates function get_attachment() to retrive image info