Is there a function in PHP to remove duplicate values in an array?

In PHP, you can remove duplicate values from an array using the `array_unique()` function. This function takes an array as input and returns a new array with only unique values, removing any duplicates. This can be useful when you want to work with a list of unique items or eliminate redundant data.

// Original array with duplicate values
$array = [1, 2, 2, 3, 4, 4, 5];

// Remove duplicate values from the array
$uniqueArray = array_unique($array);

// Output the unique array
print_r($uniqueArray);