gistfile1.txt

/**
* A Little Helper for getting specific image sizes from image custom fields.
*/

function get_image_field($field, $size = 'thumbnail')
{
	return acf_get_image_thumnails($field, $size, 'field');
}

function get_image_sub_field($field, $size = 'thumbnail')
{
	return acf_get_image_thumnails($field, $size, 'sub_field');
}

function get_tax_field_image($field, $tax, $term, $size = 'thumbnail')
{
	return acf_get_image_thumnails($field, $size, $tax, $term);
}

function acf_get_image_thumnails($field, $size = 'thumbnail', $type, $term = '')
{
	if($type == 'sub_field'):
		$image = get_sub_field($field);
	elseif($type == 'field'):
		$image = get_field($field);
	elseif($term != ""):
		$image = get_field($field, $type . "_" . $term->term_id);
	endif;

	if($image) {
		$attachment_id = $image['id'];
		$image = wp_get_attachment_image_src( $attachment_id, $size );
	} else {
		return false;
	}

	return array("url" => $image[0], "width" => $image[1], "height" => $image[2] );
}