3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php preg_match("/^010200060000\|(.|\n)?$/","^010200060000|"); echo $matches[1]; // 1234
Output for 5.0.4 - 5.0.5, 5.1.1 - 7.1.0
Notice: Undefined variable: matches in /in/ndu4Y on line 3
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/ndu4Y on line 3
Process exited with code 255.
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: matches in /in/ndu4Y on line 3