具体如下:

<?php //计算抽奖的概率 function get_rand($proArr) { $result = ''; $proSum = array_sum($proArr); foreach ($proArr as $key => $proCur) { $randNum = mt_rand(1, $proSum); if ($randNum <= $proCur) { $result = $key; break; } else { $proSum -= $proCur; } } unset ($proArr); return $result; } $prize_arr = array( '0' => array('id'=>1,'prize'=>'家电','v'=>2), '1' => array('id'=>2,'prize'=>'数码相机','v'=>5), '2' => array('id'=>3,'prize'=>'iPad','v'=>13), '3' => array('id'=>4,'prize'=>'LED显示器','v'=>15), '4' => array('id'=>5,'prize'=>'U盘','v'=>25), '5' => array('id'=>6,'prize'=>'键盘','v'=>30), '6' => array('id'=>7,'prize'=>'鼠标垫','v'=>10), ); foreach ($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<$prize_arrcount;$i++){ $pr[] = $prize_arr[$i]['prize']; } $res['no'] = $pr; //抽奖结果 $ro = $res['yes']; print_r($ro); ?>

运行结果:

iPad

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