然后随即生成一个0到最大数之间的一个数，通过循环查看它属于那个区间，返回该区间的key。
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$prize = array( 1 => 3.5, //3.5%机率 2 => 2.5, 3 => 6, 4 => 2, 5 => 42, //42%机率 6 => 36, 7 => 2, 8 => 4, 9 => 2 ); //最后确认相加等于100 $prizeList = array( 1 => array('小仙子'), 2 => array('5Q币'), 3 => array('38888游戏币'), 4 => array('88888游戏币'), 5 => array('谢谢参与!'), 6 => array('欢迎下次再来！'), 7 => array('10Q币'), 8 => array('888银元宝（绑定）'), 9 => array('随机高级坐骑（绑定）') ); //unset($prize[7]); 直接把10Q这个奖品去掉 $times = 10; $max = 0; foreach ($prize as $k => $v) { $max = $v * $times + $max; $row['v'] = $max; $row['k'] = $k; $prizeZone[] = $row; } $max--; //临界值 $rand = mt_rand(0, $max); $zone = 1; foreach ($prizeZone as $k => $v) { if ($rand >= $v['v']) { if ($rand >= $prizeZone[$k + 1]['v']) { continue; } else { $zone = $prizeZone[$k + 1]['k']; break; } } $zone = $v['k']; break; } print_r($prizeList[$zone][0]); |
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时间： 2024-09-08 22:29:53