/**
 * PHP将秒数转换成可读性良好的格式
 *
 * @param 
 * @author 网： www.jb51.cc
 **/
$time = time() - $time;
$points = array(
	'year'     => 31556926,'month'    => 2629743,'week'     => 604800,'day'      => 86400,'hour'     => 3600,'minute'   => 60,'second'   => 1
);
foreach($points as $point => $value)
{
	if($elapsed = floor($time/$value) > 0)
	{
		$s = $elapsed>1?'s':'';
		$timestamp = "$elapsed $point$s";
		break;
	}
}
/***   来自编程之家 jb51.cc（jb51.cc）   ***/