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求个位运算有关问题

WBOY
Release: 2016-06-13 12:55:40
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求个位运算问题
//debug(8 & 15);//8
$a = $this->list;//8
$b = $right[$modular[$i]['m_id']];//15
echo $a;//8
echo "
";
echo $b;//15
debug($a & $b);//0

debug()函数就是输出结果

问题是 为什么 用变量代替 8和15 的时候 &运算变成0了


------解决方案--------------------
debug( ($a & $b));

试试这个结果。
------解决方案--------------------
debug 是什么函数?自定义的?
------解决方案--------------------
$a = $this->list;//8
$b = $right[$modular[$i]['m_id']];//15

这两个真的一个是8一个是15么?
debug我没有,echo后,结果是8.
------解决方案--------------------
是否能回复啊,新人。
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