Wordpress Breadcrumb Trail for Custom Post Type

breadcrumb-posttypearchive.php

<?php

// Adds a custom breadcrumb item at position 1 (just after Home >)
function custom_breadcrumb_trail($trail ){

	if( is_tax('custom_taxonomy') ){
		$post_type_obj = get_post_type_object('custom_post_type');
		$title = apply_filters('post_type_archive_title', $post_type_obj->labels->name );
		$newtrail = array( '<li><a href="'.get_post_type_archive_link( 'custom_post_type' ).'">'.$title.'</a></li>' );
		array_splice( $trail, 1, 0, $newtrail ); // splice in at position 1
	}
	return $trail;
}
add_filter('breadcrumb_trail_items','custom_breadcrumb_trail');