functions.inc.php

function date_friendly($timestamp, $time_limit = 604800, $out_format = 'Y-m-d H:i', $formats = null, $time_now = null)
{
	if (get_setting('time_style') == 'N')
	{
		return date($out_format, $timestamp);
	}

	if (!$timestamp)
	{
		return false;
	}

	if ($formats == null)
	{
		$formats = array('YEAR' => AWS_APP::lang()->_t('%s 年前'), 'MONTH' => AWS_APP::lang()->_t('%s 月前'), 'DAY' => AWS_APP::lang()->_t('%s 天前'), 'HOUR' => AWS_APP::lang()->_t('%s 小时前'), 'MINUTE' => AWS_APP::lang()->_t('%s 分钟前'), 'SECOND' => AWS_APP::lang()->_t('%s 秒前'));
	}

	$time_now = $time_now == null ? time() : $time_now;
	$seconds = $time_now - $timestamp;

	if ($seconds == 0)
	{
		$seconds = 1;
	}

	if (!$time_limit OR $seconds > $time_limit)
	{
		return date($out_format, $timestamp);
	}

	$minutes = floor($seconds / 60);
	$hours = floor($minutes / 60);
	$days = floor($hours / 24);
	$months = floor($days / 30);
	$years = floor($months / 12);

	if ($years > 0)
	{
		$diffFormat = 'YEAR';
	}
	else
	{
		if ($months > 0)
		{
			$diffFormat = 'MONTH';
		}
		else
		{
			if ($days > 0)
			{
				$diffFormat = 'DAY';
			}
			else
			{
				if ($hours > 0)
				{
					$diffFormat = 'HOUR';
				}
				else
				{
					$diffFormat = ($minutes > 0) ? 'MINUTE' : 'SECOND';
				}
			}
		}
	}

	$dateDiff = null;

	switch ($diffFormat)
	{
		case 'YEAR' :
			$dateDiff = sprintf($formats[$diffFormat], $years);
			break;
		case 'MONTH' :
			$dateDiff = sprintf($formats[$diffFormat], $months);
			break;
		case 'DAY' :
			$dateDiff = sprintf($formats[$diffFormat], $days);
			break;
		case 'HOUR' :
			$dateDiff = sprintf($formats[$diffFormat], $hours);
			break;
		case 'MINUTE' :
			$dateDiff = sprintf($formats[$diffFormat], $minutes);
			break;
		case 'SECOND' :
			$dateDiff = sprintf($formats[$diffFormat], $seconds);
			break;
	}

	return $dateDiff;
}