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run code in 150+ php & hhvm versions
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<?php var_dump(preg_replace('/\[(\S+)\]/', '', "dskfghksd skdjfh asdkjfh sadjkfh [sdfjhasjld]kj flaksdjf "));
based on pC9ZJ
Output for 4.3.0 - 7.1.0
string(45) "dskfghksd skdjfh asdkjfh sadjkfh kj flaksdjf "