Print out before loading another webpage

[fib_81]

Is there a way to printout some string before loading a new page. I use sleep after I print something out and then used a header to direct the browser to another page.
For example:

echo "Foo";
sleep(10);
header("Location: ./foo.php");

So far, php did not print out anything and the browser goes directly to foo.php

[coopster]

You can't send any output to the browser before a header() [php.net] function. More reading on the manual page link.

[jatar_k]

maybe output your string and then use a META refresh