php计算抽奖的概率
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2024-01-05 22:37:04
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$proCur) { $randNum = mt_rand(1, $proSum); if ($randNum array('id'=>1,'prize'=>'1000000514','v'=>2), '1' => array('id'=>2,'prize'=>'1000000513','v'=>5), '2' => array('id'=>3,'prize'=>'1000000512','v'=>13), '3' => array('id'=>4,'prize'=>'1000000511','v'=>15), '4' => array('id'=>5,'prize'=>'1000000510','v'=>25), '5' => array('id'=>6,'prize'=>'1000000509','v'=>30), '6' => array('id'=>7,'prize'=>'1000000508','v'=>10), ); foreach ($prize_arr as $key => $val) { $arr[$val['id']] = $val['v']; } $rid = get_rand($arr); $res['yes'] = $prize_arr[$rid-1]['prize']; unset($prize_arr[$rid-1]); shuffle($prize_arr); $prize_arrcount = count($prize_arr); for($i=0;$i