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run code in 150+ php & hhvm versions
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<?php preg_match_all('/\{ASK\((.+?)\)\}/', '{ASK(Value, Value, \'Sentence\', X)}', $matches); print_r($matches);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => Array ( [0] => {ASK(Value, Value, 'Sentence', X)} ) [1] => Array ( [0] => Value, Value, 'Sentence', X ) )