3v4l.org

run code in 300+ PHP versions simultaneously
<?php foreach (array('[1234](56 789)', '[1011](1213)') as $value) { $exp = '/[\(\[].+[\)\]]/'; $res = preg_match($exp, $value, $matches); print_r($matches); }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Array ( [0] => [1234](56 789) ) Array ( [0] => [1011](1213) )

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326.87 ms | 405 KiB | 417 Q