EnvayaSMS (Android App) Sending SMS From WEB

<?php

header('Content-Type: application/json; charset=utf-8');

function compute_signature($url, $data, $password)
{
    ksort($data);

    $input = $url;
    foreach ($data as $key => $value)
        $input .= ",$key=$value";
    $input .= ",$password";

    return base64_encode(sha1($input, true));
}

function is_validated($correct_password)
{
    $signature = @$_SERVER['HTTP_X_REQUEST_SIGNATURE'];
    if (!$signature)
    {
        return false;
    }

    $is_secure = (!empty($_SERVER['HTTPS']) and filter_var($_SERVER['HTTPS'],
        FILTER_VALIDATE_BOOLEAN));
    $protocol = $is_secure ? 'https' : 'http';
    $full_url = $protocol . "://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];

    $correct_signature = compute_signature($full_url, $_POST, $correct_password);
    return $signature === $correct_signature;
}

$envayaPass = '1234';
if (!is_validated($envayaPass))
{
    header('HTTP/1.1 401 Unauthorized', true, 401);
    echo '{"error":{"message:"Password Salah"}}';
    exit();
}

$pesan_keluar = array();
$pesan_keluar[] = array('to' => '+6285729112015', 'message' => 'Pesan keluar 1');
$pesan_keluar[] = array('to' => '+6285729112015', 'message' => 'Pesan keluar 2');
$pesan_keluar[] = array('to' => '+6285729112015', 'message' => 'Pesan keluar 3');
$pesan_keluar[] = array('to' => '+6285729112015', 'message' => 'Pesan keluar 4');
$pesan_keluar[] = array('to' => '+6285729112015', 'message' => 'Pesan keluar 5');

$payload = array('events' => array(array(
            'event' => 'send',
            'messages' => $pesan_keluar,
            )));
echo json_encode($payload);

?>