<?php
$postMeta = get_post_meta($post->id);
print_r($postMeta);
?>
That should give you a print of all the custom fields attached to the post in a 'field_name' => 'field_value' array. This is just temporary code to find out the name of the field that holds the image information.
Once you have identified the ‘field_name’ that is matched with your image ‘field_value’, do this:
<?php
foreach ( $posts as $post ) {
if (has_post_thumbnail($post->ID)) {
$post_thumbnail_id = get_post_thumbnail_id( $post->ID );
$image_src=wp_get_attachment_image_src($post_thumbnail_id,'post-thumb');
$homepage_secs.='<div class="thumb-container"><div class="thumb"><img class="image" src="'.$image_src[0].'" /></div></div>';
}
$second_image = get_field('field_name', $post->ID);
// do whatever you need to with the second image
?>
The difference between get_field() and the_field() is just that the_field() prints the field value to the screen immediately, whereas get_field() allows you to assign the result to a variable.
