本文主要是介绍php抽奖概率程序，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
<?php$prize_arr = array( '0' => array('id' => 1, 'title' => 'iphone5s', 'v' => 5), '1' => array('id' => 2, 'title' => '联系笔记本', 'v' => 10), '2' => array('id' => 3, 'title' => '音箱设备', 'v' => 20), '3' => array('id' => 4, 'title' => '30GU盘', 'v' => 30), '4' => array('id' => 5, 'title' => '话费50元', 'v' => 10), '5' => array('id' => 6, 'title' => 'iphone6s', 'v' => 15), '6' => array('id' => 7, 'title' => '谢谢，继续加油哦！~', 'v' => 10),
); foreach ($prize_arr as $key => $val) { $arr[$val['id']] = $val['v'];
} $prize_id = getRand($arr); //根据概率获取奖品id
$data['msg'] = ($prize_id == 7) ? 0 : 1; //如果为0则没中
$data['prize_title'] = $prize_arr[$prize_id - 1]['title']; //中奖奖品
echo json_encode($data);
exit; //以json数组返回给前端 function getRand($proArr) { //计算中奖概率 $rs = ''; //z中奖结果 $proSum = array_sum($proArr); //概率数组的总概率精度 //概率数组循环 foreach ($proArr as $key => $proCur) { $randNum = mt_rand(1, $proSum); if ($randNum <= $proCur) { $rs = $key; break; } else { $proSum -= $proCur; } } unset($proArr); return $rs;
}?>
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