function get_purchases_control()
{
if (filter_input(INPUT_GET, 'user')) {
$obj = new books();
$user = sanitize_string(filter_input(INPUT_GET, 'user'));
if ($obj->get_purchases($user)) {
echo '{"result":1, "purchases":[';
$row = $obj->fetch();
while ($row) {
echo json_encode($row);
if ($row = $obj->fetch()) {
echo ',';
}
}
echo ']}';
} else {
echo '{"result":0,"message": "Unsuccessful query"}';
}
}
}
