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这样使用while循环很奇怪?解决思路

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Release: 2016-06-13 13:37:19
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这样使用while循环很奇怪?

PHP code
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        $pnum=91;
        $randNum=0;
        while($pnum>18){            
            $randNum=$pnum/2;
            if($randNum
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我的本意是想获取比18小的数字,
可是,得出的是45.5?

请问错在哪里?

------解决方案--------------------
while这样用:

$pnum = 91;
while($pnum >= 18){
$pnum /= 2;
}
echo $pnum;

------解决方案--------------------
死的不能在死的循环。
我的本意是想获取比18小的数字??你的这个是什么需求?有点糊涂

PHP code

 $pnum=91;
 $randNum=0;
 while($pnum>18){            
     $randNum = $pnum = $pnum/2;
     if($randNum
                 
              
              
        
            
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