php - Display All Post Attachments and Assign Class to the Last Image? in WordPress

This should do it, I think:

function get_images() { global $post; $attachment = get_children(array( 'post_parent' =>
 $post->
ID, 'post_type' =>
 'attachment', 'post_mime_type' =>
 'image', 'order' =>
 'ASC', 'numberposts' =>
 -1 ), ARRAY_N ); if ( $attachment ) { $attachment_count = count($attachment); foreach($i=0; $i < $attachment_count; $i++) { $last = ($i == ($attachment_count-1) ) ? ' last' : ''; echo '<img src="' . wp_get_attachment_url($attachment[$i]->
ID) . '" class="post-attachment'.$last.'" />
'; } }
}