尝试:

使用array_filter()从数组中获取所有重复值

Use array_filter() to get all duplicate values from array

使用array_diff()从数组中获取所有唯一值

Use array_diff() to get all unique values from array

$array = array(1=>0, 2=>1, 3=>1, 4=>2);
$counts = array_count_values($array);
$duplicates = array_filter($array, function ($value) use ($counts) {
    return $counts[$value] > 1;
});
print '<pre>';print_r($duplicates);

$result=array_diff($array,$duplicates);
print '<pre>';print_r($result);

输出:

Array
(
    [2] => 1
    [3] => 1
)

Array
(
    [1] => 0
    [4] => 2
)