3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo preg_replace('/\G(?<=^.)[^@]*([^@]{2}@[^.]{2})[^.]*(.\.).*(?=.$)/i','*$1*$2*','example@example.com'); // e****le@ex****e.**m
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.2.0
example@example.com
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/jYKM6 on line 3
Process exited with code 255.