通过值从三个数组中获得差异

Question

I am trying to get the difference between three arrays

array_diff() function doesn't help because it matches only the first array with others

For example I want to compare three arrays and each array has one of the element different from each other like this

$a1=array("a"=>"red","b"=>"green","c"=>"blue", 'v1' => 'sss');
$a2=array("e"=>"red","f"=>"green","g"=>"blue", 'v2' => 'ss');
$a3=array("e"=>"red","f"=>"green","g"=>"blue", 'v3' => 's');

when I use array_diff() on these arrays it would just show me the unique value out of other two arrays

$res = array_diff($a1, $a2, $a3);

print_r($res);

It's result would be Array ( [v1] => sss )

While I want it to tell me the unique values in all these arrays like this Array ( [v1] => sss [v2] => ss [v3] => s )

I tried other array comparison functions but couldn't find one to compare all given array to each other instead of comparing just one array to others

Answer 1

    $var=(array_diff($a1,$a2,$a3));
    $var1=(array_diff($a2,$a1,$a3));
    $var2=(array_diff($a3,$a2,$a1));
    $v=array_merge($var,$var1,$var2);

I guess this helps for you.check it out..