Are there any best practices for handling empty or whitespace values in PHP arrays?

When working with PHP arrays, it's important to handle empty or whitespace values properly to avoid unexpected behavior or errors in your code. One common approach is to use functions like `array_filter()` or `array_map()` to remove empty or whitespace values from the array.

// Example code snippet to remove empty or whitespace values from a PHP array
$array = ["apple", "banana", "", "  ", "orange"];

// Remove empty or whitespace values from the array
$array = array_filter($array, function($value) {
    return trim($value) !== "";
});

// Output the modified array
print_r($array);