3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php preg_match( '/^\[#(\d+)\]/', '[#1234]fdfasdfsdf', $matches); echo $matches[1]; // 1234
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.2.0
1234
Output for 5.1.0
<br /> <b>Fatal error</b>: fatal flex scanner internal error--end of buffer missed in <b>/in/1I4LR</b> on line <b>3</b><br />
Process exited with code 255.