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<?php $array_2 = []; for($i=1;$i<=1000;++$i){ $temp = []; for($j=1;$j<=1000;++$j){ $temp[] = rand(1,100); } $array_2[] = $temp; } $sum = array_reduce($array_2,function($sum,$value){ $sum += array_sum($value); return $sum; }); echo $sum;

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