array_intersect if display all matches, and ones that do not match ?

if (array_intersect($1,$2))
{
//the ones that match??? how would I show on the ones that match?
} else
{
//the ones that do not match how do I show the ones that do not match?
}

I have tried return false and return true nothing.. i am not sure what I am doing incorrectly I have also tried if (!array_intersect($1,$2))

 

$matches = array_intersect($array1, $array2);
$nomatches = array_diff($array1, $array2);

print_r($matches);
print_r($nomatches);

 

fantastic