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run code in 150+ php & hhvm versions
Bugs & Features
<?php preg_match('(Hello (\w+))', 'Hello World', $data); echo $data[1];
Output for 4.3.0 - 5.6.20, hhvm-3.9.1 - 3.12.0, 7.0.0 - 7.0.5
World