PHP输出时分秒

发帖时，显示几秒前发表，几分钟前发表，几小时前发表

亲测可用，项目中用到了

function gettime($time,$time_n){
	$strtime = '';
	$time = $time-$time_n;
	
	if($time >= 86400){
        $strtime .= date("Y-m-d", $time_n);
		return $strtime;
	}
	
	if($time >= 3600){
		$strtime .= intval($time/3600).'小时';
		return $strtime;
	}
	
	if($time >= 60){
		$strtime .= intval($time/60).'分钟';
		return $strtime;
	}
	
	if($time >= 0){
		$strtime .= intval($time).'秒';
		return $strtime;
	}else{
		$strtime = "时间错误";
	}
}
$time1 = time();
$time2 = 1407913674;
$str = gettime($time1,$time2);
var_dump($str);

另一种格式：

<?php
function gettime($time,$time_n){
	$strtime = '';
	$time = $time_n-$time;
	
	if($time >= 86400){
        $strtime .= intval($time/86400).'天';
        $time = $time % 86400;
	}else{
		$strtime .= '';
	}
	if($time >= 3600){
		$strtime .= intval($time/3600).'小时';
		$time = $time % 3600;
	}else{
		$strtime .= '';
	}
	if($time >= 60){
		$strtime .= intval($time/60).'分钟';
		$time = $time % 60;
	}else{
		$strtime .= '';
	}
	if($time >= 0){
		$strtime .= intval($time).'秒';
	}else{
		$strtime = "时间错误";
	}
	return $strtime;
}
$time1 = time(); 
$time2 = 1411517340;
$str = gettime($time1,$time2);
var_dump($str);