What are the potential pitfalls of not properly handling duplicate elements in PHP arrays?

When duplicate elements are not properly handled in PHP arrays, it can lead to incorrect data processing or unexpected behavior in your application. To solve this issue, you can use functions like array_unique() to remove duplicate elements from an array before performing any operations on it.

// Example of removing duplicate elements from an array
$originalArray = [1, 2, 3, 2, 4, 5, 1];
$uniqueArray = array_unique($originalArray);

print_r($uniqueArray);