for ($j = 0; $j < $cols; $j++) {
switch ($j % 3) {
case 0:
$row[] = $i;
break;
case 1:
$row[] = '(' . $i . ',' . $j . ')';
break;
case 2:
$row[] = new DateTime('2014-01-01');
break;
}
}
$data[] = $row;
}
$start = microtime(true);
$dataTable = new Svrnm\ExcelDataTables\ExcelDataTable();
$dataTable->showHeaders();
$dataTable->addRows($data);
$time0 = microtime(true) - $start;
$dataTable->attachToFile($in, $out);
$time1 = microtime(true) - $start;
$lastPeak = memory_get_peak_usage();
echo $rows . ' x ' . $cols . ":\t";
echo $time0 . " s\t";
echo $time1 . " s\t";
echo floor($rows / $time1) . " rows/s\t";
echo floor($rows * $cols / $time1) . " entries/s\t";
echo $lastPeak / (1024 * 1024) . ' MB' . PHP_EOL;
$rows *= 2;
}