Find the Non-Repeating Elements in an Array

Question

My array is :

$array= array(4,3,4,3,1,2,1);

And I\'d like to output it like below:

Output = 2 

(As 2 i

Answer 1

you can do it like this:

$array= array(4,3,4,3,1,2,1);
foreach($array as $v)
{
  $arr[$v][] = 1;
}
foreach($arr as $k => $v)
{
  if(count($v) == 1)
    $o[] = $k;
}

print_r($o);

result:

Array
(
    [0] => 2
)