3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = str_repeat("{ \n}", 20); preg_replace('{((.*\n+)+)}','x',$str); var_dump($str);
based on JIms0
Output for 4.3.0 - 7.2.0
string(80) "{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }"