What is the purpose of the array_pop function in PHP and what potential pitfalls should be aware of when using it?

The purpose of the array_pop function in PHP is to remove and return the last element of an array. One potential pitfall to be aware of when using array_pop is that it modifies the original array by removing the last element, so make sure to store the popped value if needed before calling the function.

$myArray = [1, 2, 3, 4, 5];
$poppedValue = array_pop($myArray);
echo $poppedValue; // Output: 5