How can the PHP function array_unique be utilized to remove duplicate values from an array?

The PHP function array_unique can be utilized to remove duplicate values from an array by creating a new array with only unique values from the original array. This function compares values using strict comparison (===), so it will not remove elements that have the same value but are of different data types. To use array_unique, simply pass the original array as a parameter to the function, and it will return a new array with duplicate values removed.

// 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);