Methods ob_start and ob_flush don't work, why?

Question

I am using ob_start()/ob_flush() to, hopefully, give me some progress during a long import operation.

Here is a simple outline of what I\'m

Answer 1

Hey man I was also got stuck in this problem and finally got the correct solution here it is for you

you have to add content type for your page you can do that by two ways 1. using html tag

Ex.

';
ob_flush();
flush();
sleep(3);
}
?>

1. using php header function

Ex.

';
ob_flush();
flush();
sleep(3);
}
?>

All the best