我想用PHP找到两行之间的区别[关闭]

I have two rows fetched from database... The table is something like

id | values
------------
1  | speaker
2  | modem
3  | pendrive

and another table is something like

id | values
------------
1  | speaker
2  | pendrive

I want to see like

no.| values
------------
1  | modem

You can use php array_diff, it will give you exactly what you want:
This is how it works:

$newArray= array_diff($array1, $array2);

Here is a working DEMO