mysql_close issue

I have two wp installed on my server, one is my website and 2nd is blog. I want to display two recent posts from blog to website through bellow code.

It is working perfect but I think mysql_close() is making issue to close database. because I am calling footer of my website but it is showing posts from blog. But on inner pages it is displaying website footer.

How can i fix it?

<?php
	$db_username = '#######';
	$db_password = '#######';
	$db_database = '#######';  

	$blog_url = 'https://www.#######.com/#######/blog/'; //base folder for the blog. Make SURE there is a slash at the end  

	//connect to the database
	$con = mysql_connect(localhost, $db_username, $db_password);
	@mysql_select_db($db_database) or die("Unable to select database");
	$query = "Select * FROM wp_posts WHERE post_type='post' AND post_status='publish' ORDER BY id DESC LIMIT 2";

	$query_result = mysql_query($query);  

	while($row = mysql_fetch_array($query_result))
    {
    ?>

    <div class="blog_cont"> <a>"><b><?php echo $row['post_title'] ?></b></a><br clear="all" />
      <span><?php if (strlen($row['post_content']) > 40) { echo substr($row['post_content'], 0, 120) . '...'; } ?></span> <a>">Read More ?</a> </div>
    <?php }
	  @mysql_close($con);
	?>