数字是用php从后台提取的，就是不知道如何把这个数字拆开，好像只有先转为字符串形式。
------解决思路----------------------
$t = str_split(123456);
print_r($t);
Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => 5
[5] => 6
)
------解决思路----------------------
$num = 12345678;
$res = number_format($num);
echo $res;