<?php
$random = md5 ( rand () . microtime () );
header( 'Content-type: multipart/x-mixed-replace;boundary=' . $random );

echo "\n--$random\n";

$i = 1;

while ( $i < 5 ){
     echo "Content-type: text/html\n\n";
     echo "<b>$i</b>\n";
     echo "--$random\n";
     $t = do_output ();
     $i++;
  }

echo "Content-type: text/html\n\n";
echo "<h1> http headers are fun</h1>\n";
echo "--$random--\n";

function do_output ()
{
	$t = flush();
	$t = ob_flush();
    usleep(3000000);
	return 0;
}
?>