Are there any specific PHP functions or methods that can simplify the process of counting unique values in an array?

When counting unique values in an array, one common approach is to use the `array_count_values()` function to get the count of each value in the array, and then filter out the values with a count greater than 1 to get the unique values. Another approach is to use the `array_unique()` function to remove duplicate values from the array and then count the elements in the resulting array.

// Using array_count_values() and filtering out values with count > 1
$array = [1, 2, 3, 1, 2, 4, 5, 3];
$valueCounts = array_count_values($array);
$uniqueValues = array_filter($valueCounts, function($count) { return $count == 1; });
$uniqueCount = count($uniqueValues);
echo $uniqueCount;

// Using array_unique() and counting elements in the resulting array
$array = [1, 2, 3, 1, 2, 4, 5, 3];
$uniqueArray = array_unique($array);
$uniqueCount = count($uniqueArray);
echo $uniqueCount;