php 时间相差(x年前，x月前，x天前，x小时前，x分钟前，x秒前)

function timeDiff($time){
$timeCurrent=time();
$timeDiff=abs($timeCurrent-$time);//取时间差的绝对值
$second=floor($timeDiff);//相差秒数
$minite=floor($timeDiff/60);//相差分钟数
$hour=floor($timeDiff/3600);//相差小时数
$day=floor($timeDiff/3600/24);//相差天数
$month=floor($timeDiff/3600/24/30);//相差月数
$year=floor($timeDiff/3600/24/365);//相差年数
if($year>0){
return $year."年前";
}
elseif($month>0){
return $month."月前";
}
elseif($day>0){
return $day."天前";
}
elseif($hour>0){
return $hour."小时前";
}
elseif($minite>0){
return $minite."分钟前";
}
elseif($second>0){
return $second."秒前";
}


}