How can PHP developers ensure case-insensitive sorting of arrays using natcasesort()?

When sorting arrays in PHP, the default sorting functions are case-sensitive, meaning that uppercase letters are considered before lowercase letters. To ensure case-insensitive sorting, PHP developers can use the `natcasesort()` function, which sorts an array using a natural order algorithm while ignoring the case of the values.

// Sample array to be sorted
$fruits = array("apple", "Orange", "banana", "Pineapple");

// Sort the array in a case-insensitive manner
natcasesort($fruits);

// Output the sorted array
print_r($fruits);