I have 2 strings like this

```
$s1="32.56.86.90.23";

$s2="11.25.32.90.10";

```

I need to compare `$s1` and `$s2` and find if there are 2 or more numbers in common.

I am using this way

```
$s1_ar=explode(".",$s1);
$s2_ar=explode(".",$s2);
$result=array_diff($s1_ar,$s2_ar);
$rt1=5-count($result);
if($result>=2){ echo "YES"; } else {echo "no"; }

```

Since I need millions values of `$s1` and `$s2` and the code above seems to be slow, do you know alternative way to execute the work faster ?