function SendMessagefirst_homework($contactNumber, $messageContent, $watsapInstance, $username, $apiKey,$imgUrl, $ttt)
{
   $apiKey='supersecret123';
   // 🧹 Clean contact number
    $NewContact = preg_replace('/[\s-]+/', '', $contactNumber);

    if (strpos($NewContact, '+60') === 0) {
        $cleanContact = ltrim($NewContact, '+');
        $NewContact   = $cleanContact . '@c.us';
    } else {
        $cleanContact = ltrim($NewContact, '+');
        $cleanContact = ltrim($cleanContact, '0');

        if (strlen($cleanContact) >= 12) {
            $NewContact = substr($cleanContact, -12);
        } else {
            $NewContact = '92' . substr($cleanContact, -10);
        }
        $NewContact .= '@c.us';
    }

    // 📷 Image URL
    $schoolLogo =$imgUrl;// "https://stasuelectric.com/SchoolEventSystem/Student-Attendance-System01-main/Admin/img/" . $username . ".jpg";

    // WAHA API endpoint
    $sendURL = rtrim($watsapInstance, '/') . "/api/sendImage";

    // JSON body
    $data = [
        "session" => $username,
        "chatId" => $NewContact,
        "file" => [
            "mimetype" => "image/jpeg",
            "url" => $schoolLogo,
            "filename" => $ttt
        ],
        "caption" => $messageContent
    ];

    // HTTP headers with Bearer token
   $options = [
    'http' => [
        'header'  =>
            "Content-Type: application/json\r\n" .
            "Accept: application/json\r\n" .
            "X-Api-Key: $apiKey\r\n",   // ✅ Correct header
        'method'  => 'POST',
        'content' => json_encode($data),
        'ignore_errors' => true
    ],
];


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

    // 📝 Log everything for debugging
 //   file_put_contents("my.log", "\n\n--- SEND MESSAGE ---\n", FILE_APPEND);
 ///   file_put_contents("my.log", "TIME: " . date('Y-m-d H:i:s') . "\n", FILE_APPEND);
//    file_put_contents("my.log", "URL: $sendURL\n", FILE_APPEND);
//    file_put_contents("my.log", "CONTACT: $NewContact\n", FILE_APPEND);
  //  file_put_contents("my.log", "SESSION: $username\n", FILE_APPEND);
//    file_put_contents("my.log", "MESSAGE: $messageContent\n", FILE_APPEND);
 //   file_put_contents("my.log", "REQUEST BODY: " . json_encode($data) . "\n", FILE_APPEND);
  ///  file_put_contents("my.log", "RESPONSE: " . htmlspecialchars($result) . "\n", FILE_APPEND);

    if ($result === false) {
        file_put_contents("my.log", "ERROR: " . print_r(error_get_last(), true) . "\n", FILE_APPEND);
    }
}