How can PHP beginners effectively manage arrays with duplicate values and ensure efficient code execution?

When managing arrays with duplicate values in PHP, beginners can use functions like array_unique() to remove duplicates efficiently. This function eliminates duplicate values from an array, ensuring that each value appears only once. By using array_unique() in combination with other array functions, beginners can effectively manage arrays with duplicate values while maintaining efficient code execution.

// Example code snippet to manage arrays with duplicate values
$array = [1, 2, 2, 3, 4, 4, 5];
$uniqueArray = array_unique($array);

print_r($uniqueArray);