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run code in 200+ php & hhvm versions
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<?php $str = '自此直至2010年n'; preg_match_all('/(\w+)/', $str, $matches); print_r($matches[0]);
Output for 4.3.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.2.6
Array ( [0] => 2010 [1] => n )