3v4l.org

run code in 300+ PHP versions simultaneously
<?php $rekening = '101002000003385'; echo preg_replace('/(.{3})/', '$1-', $rekening);
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
101-002-000-003-385-

preferences:
148.19 ms | 404 KiB | 180 Q