3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $foo = 'emaildshfs"\'#&*^$&%@%@@()$!jgdj-._gjhg@hgdjgcjhdsg.nl'; var_dump(preg_replace('/[^a-z0-9.\-_@]/i', '', $foo));
based on q5kQS
Output for 4.3.0 - 7.2.0
string(39) "emaildshfs@@@jgdj-._gjhg@hgdjgcjhdsg.nl"