php 简单计算权重的方法（适合抽奖类的应用）

$data=array(
	0=>array('id'=>1,'name'=>'一等奖','weight'=>'5'),
	1=>array('id'=>2,'name'=>'二等奖','weight'=>'10'),
	2=>array('id'=>3,'name'=>'三等奖','weight'=>'25'),
	3=>array('id'=>4,'name'=>'谢谢抽奖','weight'=>'60')
);

// 权重数值越高，被返回的概率越大
// author www.Alixixi.com
function countWeight($data){
	$weight=0;
	$temp=array();
	foreach($data as $v){
		$weight+=$v['weight'];
		for($i=0;$i
<p><font face="Courier New">计算结果返回如下：</font></p>
<p><font face="Courier New">Array<br>
(<br>
    [id] => 4<br>
    [name] => 谢谢抽奖<br>
    [weight] => 60<br>
)</font></p>
            <p style="width:100%;text-align:center;margin:10px 0">

<br>
<br>

</p><p style="width:100%;text-align:center;margin:10px 0">

            </p><p class="clear"></p>