Yami Odymel https://invade.tw/ says to YSITD
$questions = [0 => [], 1 => [], 2 => [], 3 => []]; /** 一次抽五題 */ $currentQuestions = array_rand($questions, 5); /** 取得已回答的順序 */ $answered = file_get_content('answered.txt'); /** 重複檢查 */ do {