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run code in 150+ php & hhvm versions
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<?php $arr = array("key1" => 10, "key2" => 20, "key5" => 1, "key0" => 11); array_splice($arr, 1); var_dump($arr);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(1) { ["key1"]=> int(10) }