我用ajax传递了一个参数到后台
$v=$_POST[ ' v ' ];
然后执行一个函数 aaa($v);
function aaa($fun){
//我想在这里global一个变量 global哪个变量我也是不知道的 是根据$fun来的,$fun只是字符串而已,
如果$fun==a那么就global $a 如果$fun==b那么就global $b 参数名和变量名是相等的
但你不能写这样的判断
if($fun=='a'){
global $a;
}
因为$fun的值不是固定的那么几个,可能会增加或更改
我知道参数和变量不是一个概念但我想实现这个效果
}
回复讨论(解决方案)
你直接 global $$fun; 不行?php 好像是可以的
可以
global $$fun;
也可以
echo $GLOBALS[$fun];
直接global $$fun;就好了,楼上正解

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