Get latest post on single post

gistfile1.txt

<?php

// Get latest posts on single post 
// Exclude current post
function GetLatestPosts( $number = 5 )
{
	global $post;
  
	$args = array(
		'posts_per_page'  => $number,
		'exclude'         => $post->ID
	);
  
  	$posts = get_posts( $args );
  
	$html = '<ul>';
	
		foreach( $posts as $post )
		{
			$html .= '<li>';
				$html .= '<a href="'. get_permalink( $post->ID ) .'">'. get_the_title( $post->ID ) .'</a>';
			$html .= '</li>';
		}
	
	$html .= '</ul>';
	
	return $html;
}