3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input = "michael@test.com dave@cheese.mansions milkman@serverdouche.co.uk"; $email = preg_grep("/[-0-9a-zA-Z.+_]+@[-0-9a-zA-Z.+_]+\.[a-zA-Z]+/", explode(' ', $input)); var_dump($email);

preferences:
54.15 ms | 402 KiB | 5 Q