问活体检测php版本的sha1签名，有没有高手？

function createSign($data){
    //1.按字典序升序
    sort($data);
    $data = array_filter($data);
    //2.拼接字符串
    $string = implode("",$data);
    echo $string.PHP_EOL;
    $string = '1.0.0aabc1457895464appId001kHoSxvLZGxSoFsjxlbzEoUzh5PAnTU7TuserID19959248596551zxc9Qfxlti9iTVgHAjwvJdAZKN3nMuUhrsPdPlPVKlcyS50N6tlLnfuFBPIucaMS';
    echo $string.PHP_EOL;
    //返回签名
    return sha1($string);
}