composer require h0gar/csv *

$csv = new \H0gar\Csv\Csv([
	'id',
	'firstname',
	'name'
]);

$content = [
	[
		1,
		'foo',
		'bar'
	],
	// ..
];

foreach($content as $row)
	$csv->add($row);

$result = $csv->render();