3v4l.org

run code in 300+ PHP versions simultaneously
<?php $email = "testa@weste.de"; $pattern = "/^\w\K[^\s@]+@(\w)[^\s.@]+/"; $replacement = "*@$1***"; echo preg_replace($pattern, $replacement, $email);
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 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
t*@w***.de
preferences:
92.37 ms | 1380 KiB | 4 Q