3v4l.org

run code in 300+ PHP versions simultaneously
<?php $phone = '040783248898'; echo preg_replace('/.(?=.{4})/', '*', $phone);
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
********8898

preferences:
42.52 ms | 406 KiB | 5 Q