If that is all you need to do, I don't really see the need to embed PHP within ASP.
From what I know, only VBScript and JScript are supported by ASP. ASP.NET supports more, but I don't think PHP is in the list of supported langauges.
Possible option:
If you have CGI binary, and access to it, you could invoke PHP scripts within ASP, and return output. Or vice versa (I don't know if ASP can be executed via command line). Just do in ASP:
(pseudo code)
execute path/to/php -q scriptname.php
get return data and assign to variable
And all your PHP code need do is
echo $page_title;
However, that will not work it php is installed as an apche module.