数据代码不起作用？在sms api

Question

<?php
 $url = "https://semysms.net/api/3/sms.php"; //Url address for sending SMS
 $phone = '+123456'; // Phone number
 $msg = 'CHECK TEST';  // Message
 $device = '00000';  //  Device code
 $token = '0c3d05001be0e1a65766d205ed262597';  //  Your token (secret)

 $data = array(
        "phone" => $phone,
        "msg" => $msg,
        "device" => $device,
        "token" => $token
    );

    $curl = curl_init($url);
    curl_setopt($curl, CURLOPT_POST, true);
    curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);     
    $output = curl_exec($curl);
    curl_close($curl);


?>

我正在尝试添加此代码<?=$data->Phone;?>以在上面给出的SMS api中显示上面的数字，但似乎它不起作用。此代码显示了我网站上的买家电话号码。所以我认为它会起作用需要帮助。我想在上面的API中显示电话号码。