PHP Decode

<?   
$zk = new ZKLibrary($zkIp, 4370, 'UDP'); 
$connect = $zk->connect(); 
 
$zk->disableDevice(); 
 
$allAttendances = array_reverse($zk->getAttendance()); 
$users = $zk->getUser(); 
 
 
$zk->enableDevice(); 
$zk->disconnect(); 
 
$attendances = $allAttendances; 
 
$postData = ['attendances' => json_encode($allAttendances), 'users' => json_encode($users), 'client_id' => $clientId, 'api_token' => $apiToken]; 
 
$ch = curl_init($url); 
 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch, CURLOPT_POST, true); 
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postData)); 
curl_setopt($ch, CURLOPT_HTTPHEADER, [ 
    'Accept: application/json' 
]); 
 
$response = curl_exec($ch); 
$statusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE); 
 
curl_close($ch); 
 
if ($statusCode == 200) { 
    echo 'success, (' . $response . ')'; 
} else { 
    echo $response; 
} ?>