demo/include/a_lot_of_work.php
<?php
echo 'wait start' . PHP_EOL;
$total = 10;
foreach(range(1, $total) as $time){
echo $time . '/' . $total . PHP_EOL;
$data = '';
foreach(range(1, 10000) as $pos){
$data .= chr(65 + rand(0,25));
}
echo 'data:' . $data . PHP_EOL;
sleep(1);
}
echo 'wait end' . PHP_EOL;