This bit of code will set the page's title based on the filename of the script. So, my_homepage.php will be titled "My Homepage". Laziness prevails, sort of.

<?php
	$title = $_SERVER['SCRIPT_NAME'];
	$title = ltrim($title,'/');
	$title = preg_replace('/\.php$/','',$title);
	if ( strpos($title,'_') === FALSE )  // if we don't have a _ in there, it's a single word
	{
		$title = ucfirst($title);
	}
	else
	{
		$title = explode('_',$title);
		$title = array_map(myucfirst,$title);
		$title = join( ' ', $title);
	}
	print "<title>$title</title>";

	function myucfirst($s) { return ucfirst($s); }
?>