3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = "\xFC\x80\x80\x80\x80\x80"; preg_match_all( '/./u' , $str , $matches , PREG_SET_ORDER ); print_r($matches); exit(0);
Output for 4.3.5 - 7.1.0
Array ( )
Output for 4.3.0 - 4.3.4
Array ( [0] => Array ( [0] => ������ ) )