How can PHP be used to communicate with a C# program for GUID activation?

To communicate with a C# program for GUID activation using PHP, you can use a RESTful API approach. You can create a PHP script that sends a POST request with the necessary data to the C# program's API endpoint. The C# program can then process the request and activate the GUID accordingly. 

<?php
$guid = 'your_guid_here';

$data = array('guid' => $guid);

$url = 'http://csharp_program_url/api/activate_guid';

$options = array(
    'http' => array(
        'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
        'method'  => 'POST',
        'content' => http_build_query($data)
    )
);

$context  = stream_context_create($options);
$result = file_get_contents($url, false, $context);

if ($result === FALSE) {
    echo 'Error communicating with C# program';
} else {
    echo 'GUID activated successfully';
}
?>

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