/**
* Retrieves the attachment data such as Title, Caption, Alt Text, Description
* @param int $post_id the ID of the Post, Page, or Custom Post Type
* @param String $size The desired image size, e.g. thumbnail, medium, large, full, or a custom size
* @return stdClass If there is only one result, this method returns a generic
* stdClass object representing each of the image's properties, and an array if otherwise.
*/
function getImageAttachmentData( $post_id, $size = 'thumbnail', $count = 1 )
{
$objMeta = array();
$meta;// (stdClass)
$args = array(
'numberposts' => $count,
'post_parent' => $post_id,
'post_type' => 'attachment',
'nopaging' => false,
'post_mime_type' => 'image',
'order' => 'ASC', // change this to reverse the order
'orderby' => 'menu_order ID', // select which type of sorting
'post_status' => 'any'
);

$attachments = & get_children($args);

if( $attachments )
{
foreach( $attachments as $attachment )
{
$meta = new stdClass();
$meta->ID = $attachment->ID;
$meta->title = $attachment->post_title;
$meta->caption = $attachment->post_excerpt;
$meta->description = $attachment->post_content;
$meta->alt = get_post_meta($attachment->ID, '_wp_attachment_image_alt', true);

// Image properties
$props = wp_get_attachment_image_src( $attachment->ID, $size, false );

$meta->properties['url'] = $props[0];
$meta->properties['width'] = $props[1];
$meta->properties['height'] = $props[2];

$objMeta[] = $meta;
}

return ( count( $attachments ) == 1 ) ? $meta : $objMeta;
}
}

getImageAttachmentData( $_posts->ID, 'full' );