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<?php function awesome(...$arrays) { if (!is_array($arrays)) return false; $merged = array_shift($arrays); foreach($arrays as $array) { foreach($array as $k => $v) { $merged[(string)$k] = $v; } } return $merged; } $m = awesome(array('A', 'B'), array('B', 'C')); print_r($m);

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39.87 ms | 402 KiB | 5 Q