Unique in PHP

To get the unique elements of an array in PHP, you can use the array_unique() function. This function takes an array as its input and returns a new array with only the unique elements.

Here's an example:

$array = array(2, 4, 6, 4, 8, 2);
$unique_array = array_unique($array);
print_r($unique_array);

Output:

Array
(
    [0] => 2
    [1] => 4
    [2] => 6
    [4] => 8
)

As you can see, the array_unique() function removes the duplicate elements of the original array and returns a new array with only the unique elements.

You can also use the SORT_REGULAR flag as a second argument to array_unique() to maintain the original keys of the array. Here's an example:

$array = array(2 => "apple", 4 => "orange", 6 => "banana", 8 => "orange", 10 => "apple");
$unique_array = array_unique($array, SORT_REGULAR);
print_r($unique_array);

Output:

Array
(
    [2] => apple
    [4] => orange
    [6] => banana
    [10] => apple
)

In this example, the array_unique() function preserves the keys of the original array and only removes the duplicate values.