<?php
Swoole\Runtime::enableCoroutine();
go(function() {
$fp = fopen('data.txt', 'w');
echo "open\n";
fwrite($fp, str_repeat('A', 1024));
fwrite($fp, str_repeat('B', 1024));
echo "fwrite\n";
echo fread($fp, 1024);
echo "fread\n";
include __DIR__."/include.php";
echo "include\n";
var_dump(fstat($fp));
echo "fstat\n";
fseek($fp, 0);
echo "fseek\n";
fclose($fp);
});