Don't embed your favicon code in title tags. That's why you can't see it.
To include same code in various pages, create a php file to contain your head information:
header.php
<link rel="icon" href="/favicon.ico" type="image/x-icon" />
Then call it between head tags of all of your pages:
<head>
<title>My Title</title>
<? require_once 'header.php'; ?>
</head>