if文なしでじゃんけん - Qiita

<?php const WIN_LOSE_TABLE = [ 'グー' => ['チョキ' => 1, 'パー' => -1], 'チョキ' => ['パー' => 1, 'グー' => -1], 'パー' => ['グー' => 1, 'チョキ' => -1], ]; $printer = fn(string $my_hand, string $your_hand, int $result): string => sprintf("[%s vs %s] %s", $my_hand, $your_hand, match ($result) { -1 => 'あなたの負け', 0 => 'あいこ', 1 => 'あなたの勝ち', } ); foreach (['グー', 'チョキ', 'パー'] as $my_hand) { foreach (['グー', 'チョキ', 'パー'] as $