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function enhanced_time()
{
  $DateTime_obj = new DateTime();
  return $DateTime_obj->format("U");
}

function enhanced_date($format_str, $timestamp = NULL, $timezone = NULL)
{
  settype($format_str, "string"); 

  if (is_null($timestamp))
  {
    $timestamp = "now";
  }
  else 
  {
    $timestamp = "@" . number_format($timestamp, 0, ".", "");
  }

  if (!is_string($timezone))
  {
    $timezone = date_default_timezone_get();
  }

  $DateTime_obj = new DateTime($timestamp);
  $DateTime_obj->setTimezone(new DateTimeZone($timezone));

  return $DateTime_obj->format($format_str);
}

//
// Enhanced «getdate»
// (Function formatnut system date / time in GMT)
//
function enhanced_gmdate($format_str, $timestamp = NULL)
{
  return enhanced_date($format_str, $timestamp, "UTC");
}

function enhanced_getdate($timestamp = NULL, $timezone = NULL)
{

  $arr = explode("=", enhanced_date("s=i=H=d=w=m=Y=z=l=F=U", $timestamp, $timezone));

  return array(
                "seconds" => (int) $arr[0], 
                "minutes" => (int) $arr[1], 
                "hours"   => (int) $arr[2], 
                "mday"    => (int) $arr[3], 
                "wday"    => (int) $arr[4], 
                "mon"     => (int) $arr[5], 
                "year"    => (int) $arr[6], 
                "yday"    => (int) $arr[7], 
                "weekday" =>       $arr[8], 
                "month"   =>       $arr[9], 
                0         =>       $arr[10]                
              );
}

function enhanced_mktime($timezone = NULL, $hour = NULL, $minute = NULL, $second = NULL, $month = NULL, $day = NULL, $year = NULL)
{

  if (!is_string($timezone))
  {
    $timezone = date_default_timezone_get();
  }

  $default_datetime_arr = enhanced_getdate(NULL, $timezone);
  
  if (is_null($hour))   { $hour   = $default_datetime_arr["hours"]; }
  if (is_null($minute)) { $minute = $default_datetime_arr["minutes"]; }
  if (is_null($second)) { $second = $default_datetime_arr["seconds"]; }
  if (is_null($month))  { $month  = $default_datetime_arr["mon"]; }
  if (is_null($day))    { $day    = $default_datetime_arr["mday"]; }
  if (is_null($year))   { $year   = $default_datetime_arr["year"]; }

  settype($hour, "integer");
  settype($minute, "integer");
  settype($second, "integer");
  settype($month, "integer");
  settype($day, "integer");
  settype($year, "integer");

  $DateTime_obj = new DateTime();
  $DateTime_obj->setTimezone(new DateTimeZone($timezone));
  $DateTime_obj->setDate($year, $month, $day);
  $DateTime_obj->setTime($hour, $minute, $second);

  return $DateTime_obj->format("U");
}

function enhanced_gmmktime($hour = NULL, $minute = NULL, $second = NULL, $month = NULL, $day = NULL, $year = NULL)
{
  return enhanced_mktime("UTC", $hour, $minute, $second, $month, $day, $year);
}

date_default_timezone_set("Asia/Bangkok");

$timestamp_now = time();
echo $timestamp_now . "
";
$timestamp_now_e = enhanced_time();
echo $timestamp_now_e . "
";

//
// Get and display information about the current Unix timestamp
//
echo "<pre>";
var_dump(getdate($timestamp_now));
var_dump(enhanced_getdate($timestamp_now_e));
echo "
";

//
// Display the current date and time in a specified format
//
echo date(«Y-m-d H:i:s», $timestamp_now). "
";
echo enhanced_date(«Y-m-d H:i:s», $timestamp_now_e). "

";

//
// Get and bring Unix timestamp for a distant future date and time
//
$year = 2050;
$month = 3;
$day = 18;
$hour = 22;
$minute = 56;
$second = 53;

$timestamp_future = mktime($hour, $minute, $second, $month, $day, $year);
echo $timestamp_future. "
";

$timestamp_future_e = enhanced_mktime(NULL, $hour, $minute, $second, $month, $day, $year);
echo $timestamp_future_e. "

";

//
// Print a future date and time in a specified format
//
echo date(«Y-m-d H:i:s», «2531257013»). "
";
echo enhanced_date(«Y-m-d H:i:s», «2531257013»). "

";