3v4l.org

run code in 300+ PHP versions simultaneously
<?php $phone = '040783248898'; echo preg_replace('/.(?=.{4})/', '*', $phone);
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
********8898

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49.97 ms | 979 KiB | 4 Q