Are there any security risks to consider when passing an array as a parameter in PHP using the return statement?

When passing an array as a parameter in PHP using the return statement, it's important to be cautious of potential security risks such as exposing sensitive data or inadvertently modifying the original array. To mitigate these risks, consider making a deep copy of the array before returning it to ensure that the original array remains unchanged.

function processArray(array $inputArray): array {
    // Make a deep copy of the input array to prevent modification of the original array
    $outputArray = unserialize(serialize($inputArray));
    
    // Perform operations on the output array
    
    return $outputArray;
}