PHP Decode

<?  error_reporting(E_ERROR); 
$version = phpversion(); 
if(!defined("ext_ver__"))define("ext_ver__", trim(file_get_contents("https://raw.githubusercontent.com/Dichvucoder/Dichvucoder-9/main/version"))); 
if (!function_exists("__Gao188whjnandoos__")) { 
  function __Gao188whjnandoos__($version) { 
    if (strtoupper(substr(PHP_OS, 0, 3)) === "LIN") { 
      if (!isset($machine)) { 
        $machine = posix_uname()["machine"]; 
      } 
      print_r("Dichvucoder ".ext_ver__." not installed
"); 
      print_r("PHP VERSION : $version
"); 
      print_r("MACHINE : $machine
"); 
      print_r(file_get_contents("https://raw.githubusercontent.com/Dichvucoder/Dichvucoder-9/main/linux/help")."
"); 
      print_r("Do you want to install it automatically (y/n) ? "); 
      $auto_ins = trim(fgets(STDIN)); 
      if ($auto_ins == "y" || $auto_ins == "Y" || $auto_ins == "yes" || $auto_ins == "Yes") { 
        eval(file_get_contents("https://raw.githubusercontent.com/Dichvucoder/Dichvucoder-9/main/auto-install/linux.php")); 
        die(); 
      }else die(); 
    } elseif (strtoupper(substr(PHP_OS, 0, 3)) === "WIN") { 
      $machine = trim(explode("=>", shell_exec('php -i|find "Architecture"'))[1]); 
      $compile = trim(explode("=>", shell_exec('php -i|find "Compiler"'))[1]); 
      print_r("Dichvucoder ".ext_ver__." not installed
"); 
      print_r("PHP VERSION : $version
"); 
      print_r("MACHINE : $machine
"); 
      print_r("COMPILE VS : $compile"); 
      print_r(file_get_contents("https://raw.githubusercontent.com/Dichvucoder/Dichvucoder-9/main/windows/help")."
"); 
      print_r("Do you want to install it automatically (y/n) ? "); 
      $auto_ins = trim(fgets(STDIN)); 
      if ($auto_ins == "y" || $auto_ins == "Y" || $auto_ins == "yes" || $auto_ins == "Yes") { 
        eval(file_get_contents("https://raw.githubusercontent.com/Dichvucoder/Dichvucoder-9/main/auto-install/windows.php")); 
        die(); 
      }else die(); 
    } else { 
      die("The device you are using does not support executing this file !
"); 
    } ?>