3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php preg_match( '/^\{#{\d+}*\}/', '{#1234} Subject', $matches); echo $matches[1]; // 1234
based on 0rEUl
Output for 5.3.0 - 7.2.0
Notice: Undefined offset: 1 in /in/oMuNd on line 3
Output for 4.3.0 - 5.0.5, 5.1.1 - 5.2.17
Notice: Undefined offset: 1 in /in/oMuNd on line 3
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/oMuNd on line 3
Process exited with code 255.