When you're writing one line php scripts remember that 'php://stdin' is your friend. Here's a simple program I use to format PHP code for inclusion on my blog:
UNIX:
cat test.php | php -r "print htmlentities(file_get_contents('php://stdin'));"
DOS/Windows:
type test.php | php -r "print htmlentities(file_get_contents('php://stdin'));"
