小白

WBOY
WBOYOriginal
2016-06-13 12:37:211004browse

小白求助
目前在自学php,今天遇到一个小问题
$a = 10
function add(){
    $a = $a * 10;
}
   add();
 echo $a;
这个$a是多少啊,我觉得应该是10,可是执行过程是个什么道理,我看不懂,就只有这个代码片段
我是小白,希望有人能帮助我。

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