/*-------------------------------------------------------------------------*/
	// Интервал времени между событиями
	/*-------------------------------------------------------------------------*/
	function date_diff($begin, $end=0){
		if(!$end)$end = time();
		
		if( intval($end)<=intval($begin) )return array();
		
		$s_diff = intval(date("s",$end)) - intval(date("s",$begin));
		if($s_diff<0)
		{
			$s_diff += 60;
			$end -= 60;
		}
		$i_diff = intval(date("i",$end)) - intval(date("i",$begin));
		
		if($i_diff<0)
		{
			$i_diff += 60;
			$end -= 3600;
		}
		$g_diff = intval(date("G",$end)) - intval(date("G",$begin));
		if($g_diff<0)
		{
			$g_diff += 24;
			$end -= 86400;
		}
		
		$y_diff = intval(date("Y",$end)) - intval(date("Y",$begin));
		$m_diff = intval(date("m",$end)) - intval(date("m",$begin));
		$dpm = 30;
		if( stristr(",1,3,5,7,8,10,12,",",".date("Y",$end).",") )$dpm = 31;
		if(date("m",$end) == "2")
		{
			if( intval(date("Y",$end))%4  )$dpm = 28;
			else $dpm = 29;
		}
		$d_diff = intval(date("d",$end)) - intval(date("d",$begin));
		if($d_diff<0)
		{
			$d_diff += $dpm;
			$m_diff--;
		}
		if($m_diff<0)
		{
			$m_diff += 12;
			$y_diff--;
		}
		
		$diff = array();
		
		$str = " лет";
		if($y_diff%10 == 1 and $y_diff!=11)$str = " год";
		if( $y_diff%10>1 and $y_diff%10<5 and ( $y_diff<10 or $y_diff>20 ) )$str = " года";
		if($y_diff)$diff['y'] = $y_diff.$str;
		
		$str = " месяцев";
		if($m_diff == 1)$str = " месяц";
		if($m_diff>1 and $m_diff<5)$str = " месяца";
		if($m_diff)$diff['m'] = $m_diff.$str;
		
		$str = " дней";
		if($d_diff%10 == "1" and $d_diff!=11)$str = " день";
		if( $d_diff%10>1 and $d_diff%10<5 and ( $d_diff<10 or $d_diff>20 ) )$str = " дня";
		if($d_diff)$diff['d'] = $d_diff.$str;
		
		$str = " часов";
		if($g_diff%10 == "1" and $g_diff!=11)$str = " час";
		if( $g_diff%10>1 and $g_diff%10<5 and ( $g_diff<10 or $g_diff>20 ) )$str = " часа";
		if($g_diff)$diff['g'] = $g_diff.$str;
		
		$str = " минут";
		if($i_diff%10 == "1" and $i_diff!=11)$str = " минута";
		if( $i_diff%10>1 and $i_diff%10<5 and ( $i_diff<10 or $i_diff>20 ) )$str = " минуты";
		if($i_diff)$diff['i'] = $i_diff.$str;
		
		$str = " секунд";
		if($s_diff%10 == "1" and $s_diff!=11)$str = " секунда";
		if( $s_diff%10>1 and $s_diff%10<5 and ( $s_diff<10 or $s_diff>20 ) )$str = " секунды";
		if($s_diff)$diff['s'] = $s_diff.$str;
		
		return $diff;
	}

		$diff = $std->date_diff($member['joined']);
		
		if(!$diff['y'] and !$diff['m'] and !$diff['d'])unset($diff['s']);
		else unset($diff['g'],$diff['i'],$diff['s']);
		
		$diff = "<nobr>".implode(",</nobr> <nobr>",$diff)."</nobr>";
		
		$member['member_joined'] = "На форуме: ".$diff;

  $s_diff = intval(date("s",$end)) - intval(date("s",$begin));
  if($s_diff<0)
  {
  	$s_diff += 60;
  	$end -= 60;
  }
  $i_diff = intval(date("i",$end)) - intval(date("i",$begin));
  
  if($i_diff<0)
  {
  	$i_diff += 60;
  	$end -= 3600;
  }
  $g_diff = intval(date("G",$end)) - intval(date("G",$begin));
  if($g_diff<0)
  {
  	$g_diff += 24;
  	$end -= 86400;
  }
  
  $y_diff = intval(date("Y",$end)) - intval(date("Y",$begin));
  $m_diff = intval(date("m",$end)) - intval(date("m",$begin));
  $dpm = 30;
  if( stristr(",1,3,5,7,8,10,12,",",".date("Y",$end).",") )$dpm = 31;
  if(date("m",$end) == "2")
  {
  	if( intval(date("Y",$end))%4  )$dpm = 28;
  	else $dpm = 29;
  }
  $d_diff = intval(date("d",$end)) - intval(date("d",$begin));
  if($d_diff<0)
  {
  	$d_diff += $dpm;
  	$m_diff--;
  }
  if($m_diff<0)
  {
  	$m_diff += 12;
  	$y_diff--;
  }

	$olddate=new DateTime();
	$currdate=new DateTime();
	
	$olddate->setDate( date('Y', $begin), date('m', $begin), date('d', $begin));
	$currdate->setDate( date('Y', $end), date('m', $end), date('d', $end));
	
	list( $y, $m, $d)=explode( ' ', $olddate->diff( $currdate )->format( '%y %m %d' ) );	

// вуаля - в переменных $y, $m, $d записана разница между датами  с учетом високосности годов.