Untitled

<?php
//set headers
header('Transfer-Encoding: chunked');
header('Content-Type: text/html');

//browsers collect first 1024 bytes
//and show page only if bytes collected
//so we will use space padding.
//if you cannot understand what it means
//check script with PADDING=0
define("PADDING", 16);

//caret return and new line characters as constant
define("RN", "\r\n");

//user function what get current output buffer data
//and prefixes it with current buffer length.
//next it call flush functions
function flush_data(){
    $str=ob_get_contents();
    ob_clean();
    echo dechex(strlen($str)).RN.$str.RN;
    ob_flush();
    flush();
}

//default HTML 5 page
echo "<!doctype html><html><head><title>Transfer-Encoding: chunked</title>";
echo "<script>";

//+padding
for($i=0;$i<PADDING;$i++){
    //64 spaces (1 block)
    echo "                                                                ";
}
echo "</script></head><body><div>";
echo "<h1>Chunked Output Test</h1>";

//current output buffer will shown immediately in browser
//after this function
flush_data();

//cycle wait 1 sec before next iteration
for($i=0;$i<10;$i++)
{
    //print iteration number
    echo "$i<br>";
    flush_data();
    usleep(250000);
}

echo "</div></body></html>".RN;

//terminating part of encoding format
flush_data();
echo "0\r\n\r\n";
ob_flush();
?>