3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function cr($s) { return preg_replace('/\r?\n/', "\r\n", $s); } $s = cr("[\r\n]"); print_r($s);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
[ ]