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run code in 500+ PHP versions simultaneously
<?php $arr1 = [['a' => 1, 'b' => 2], ['a' => 3, 'b' => 4], ['a' => 5, 'b' => 6]]; $arr2 = [ 'c' => 'd', ...$arr1 ]; var_dump($arr2);

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50.23 ms | 1399 KiB | 5 Q