RE: [PHP] How to "smart refresh" php section using iframe?

[snip]
This is not possible with PHP alone. You need to use some client side
code such as JavaScript or Flash.
[/snip]

I think that with a combination (I have not tested this) of ob_start,
ob_flush(), sleep(), and header() that this could be accomplished.

ob_start();
.....
gather output
.....
ob_flush(); //flush output
sleep(); //waiting to refresh
header($PHP_SELF); exit();

Again, this is not tested, but my very foggy Monday morning brain says
this should work, no?