What potential legal and ethical issues could arise from using PHP to automate actions on external websites like cards-exchanger.com?

One potential legal and ethical issue that could arise from using PHP to automate actions on external websites like cards-exchanger.com is unauthorized access to the website's data or services, which could be considered a violation of the website's terms of service or even illegal. To avoid this issue, it is important to ensure that the actions being automated are within the bounds of the website's terms of service and do not infringe on any legal rights.

// Example code snippet demonstrating how to check if the action being automated is within the bounds of the website's terms of service
$websiteTermsOfService = "https://cards-exchanger.com/terms-of-service";
$automatedAction = "example_action";

if ($automatedAction is allowed as per $websiteTermsOfService) {
    // Proceed with automating the action
} else {
    // Display an error message or handle the situation appropriately
}