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<?php function number_sum($num) { return array_sum(str_split($num)); } $sum = 28; for ($b1 = 1; $b1 < 256; $b1++) { for ($b2 = 0; $b2 < 256; $b2++) { for ($b3 = 0; $b3 < 256; $b3++) { for ($b4 = 0; $b4 < 256; $b4++) { if (( number_sum($b1) + number_sum($b2) + number_sum($b3) + number_sum($b4) ) == $sum) { echo "$b1.$b2.$b3.$b4" . PHP_EOL; } } } } }
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