3v4l.org

run code in 300+ PHP versions simultaneously
<?php $row = ['a\\"', 'bbb']; $fp = fopen('php://memory', 'w+'); fputcsv($fp, $row, ',', '"', "\0"); rewind($fp); echo stream_get_contents($fp); fclose($fp);

preferences:
43.77 ms | 402 KiB | 5 Q