php表示昨天_PHP显示前天，昨天，今天，几天前

function tranTime($time) {

$rtime = date("m-d H:i",$time);

$rtime2 = date("Y-m-d H:i",$time);

$htime = date("H:i",$time);

$time = time() - $time;

if ($time < 60) {

$str = '刚刚';

} elseif ($time < 60 * 60) {

$min = floor($time/60);

$str = $min.' 分钟前';

} elseif ($time < 60 * 60 * 24) {

$h = floor($time/(60*60));

$str = $h.'小时前 '.$htime;

} elseif ($time < 60 * 60 * 24 * 3) {

$d = floor($time/(60*60*24));

if($d==1)

$str = '昨天 '.$htime;

else

$str = '前天 '.$htime;

} elseif ($time < 60 * 60 * 24 * 7) {

$d = floor($time/(60*60*24));

$str = $d.' 天前 '.$htime;

} elseif ($time < 60 * 60 * 24 * 30) {

$str = $rtime;

} else {

$str = $rtime2;

}

return $str;

}

$w_time = time() - 3600;

$times = tranTime($w_time);

echo $times;

?>