In the context of PHP development, how can the risk of users receiving duplicate payments be mitigated when implementing a system to distribute money based on login times?

To mitigate the risk of users receiving duplicate payments when distributing money based on login times, you can implement a check to ensure that a user has not already been paid for a specific time period before processing the payment.

// Check if user has already been paid for the current time period
if ($user->hasAlreadyBeenPaid($currentTimePeriod)) {
    // User has already been paid, do not process payment
    echo "User has already been paid for this time period.";
} else {
    // Process payment for the user
    $user->processPayment();
}