wordpress displaying attachment on single cpt with thumbnail size - wordpress

Question

I have snippet to displaying atachment in single cpt, but i dont now how to get the atachment image size in the code, lets say.. i want to add a thumbnail size to the image, but i dont know how..
this is the code that i used
<?php $args = array(
'numberposts' => -1, // Using -1 loads all posts
'orderby' => 'menu_order', // This ensures images are in the order set in the page media manager
'order'=> 'ASC',
'post_mime_type' => 'image', // Make sure it doesn't pull other resources, like videos
'post_parent' => $post->ID, // Important part - ensures the associated images are loaded
'post_status' => null,
'post_type' => 'attachment',
);
$images = get_children( $args ); if($images){ ?>
<div id="projectGallery">
<?php foreach($images as $image){ ?>
<img src="<?php echo $image->guid; ?>" alt="<?php echo $image->post_title; ?>" title="<?php echo $image->post_title; ?>" />
<?php} ?>
</div>
<?php } ?>
please help.. thx

Answer 1

Please follow the code below. It will help you.
<?php
$size = thumbnail, medium, large or full
$args = array(
'numberposts' => -1,
'orderby' => 'menu_order',
'order'=> 'ASC',
'post_mime_type' => 'image',
'post_parent' => $post->ID,
'post_status' => null,
'post_type' => 'attachment',
);
$images = get_children( $args );
if($images){
?>
<div id="projectGallery">
<?php
foreach($images as $image){
wp_get_attachment_image($image->ID, 'thumbnail'); //you can give thumbnail, medium, large or full according to your choice
<?php } ?>
</div>
<?php } ?>

Answer 2

You can use
wp_get_attachment_thumb_url( $attachment_id );
as follow:
<img src="<?php echo wp_get_attachment_thumb_url( $image->ID ); ?>" alt="<?php echo $image->post_title; ?>" title="<?php echo $image->post_title; ?>" />