3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $matches = []; preg_match('/(^|.*\])([\w\.]+)(\[.*|$)/', 'accaaa+', $matches); echo var_dump($matches);
based on EFZZC
Output for 5.4.9 - 7.2.0
array(0) { }
Output for 5.3.19 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/Ol20n on line 3
Process exited with code 255.