Questions about ob output

Ob output & lt ;? Phpob_start (); echo & nbsp; str_repeat ("& nbsp;", 4098); for ($ I = 65; $ I & lt; 70; $ I ++) {echo & nbsp; chr ($ I); ob_flush (); flush about ob output

 ob_start();
echo str_repeat(" ",4098);
for($i=65;$i<70;$i++){
echo chr($i);
ob_flush();
flush();
sleep(1);
}
?>

The above code is normal in IE and FF, and ABCDE can be output in sequence, but it cannot be displayed in Google's browser in sequence, but it outputs ABCDE at a time, I thought it was because Google's cache was too large and str_repeat was increased to 9000. why?
------ Solution --------------------
I don't know, what is the 360 speed kernel?

This type of output is boring. I used to only know that it is related to the server, but now it is related to the browser.
It can be seen that success becomes a small probability event.
There is no practical value, so you don't have to focus on it.


------ Solution --------------------

if (ob_get_level() == 0) ob_start();

for ($i = 0; $i<10; $i++){

echo "
 Line to show.";
//echo str_pad('1',4096)."\n";
echo str_repeat("1",4098);
ob_flush();
flush();
sleep(2);
}

echo "Done.";

ob_end_flush();