Complete example of PHP time class (very practical), _PHP tutorial

Complete example of PHP time class (very practical),

The example in this article describes the PHP time class. Share it with everyone for your reference, the details are as follows:

<?php
header("Content-type:text/html;Charset=utf-8");
class time{
 private $year;//年
 private $month;//月
 private $day;//天
 private $hour;//小时
 private $minute;//分钟
 private $second;//秒
 private $microtime;//毫秒
 private $weekday;//星期
 private $longDate;//完整的时间格式
 private $diffTime;//两个时间的差值
 //返回年份 time：时间格式为时间戳  2013-3-27
 function getyear($time="",$type=""){
 if($time==""){
  $time=time();
 }
 if($type==1){
  return $this->year=date("y",$time); //返回两位的年份 13
 }else{
  return $this->year=date("Y",$time); //返回四位的年份 2013
 }
 }
 //返回当前时间的月份 time：时间格式为时间戳 2013-3-27
 function getmonth($time="",$type=""){
 if($time==""){
  $time=time();
 }
 switch($type){
  case 1:$this->month=date("n",$time);//返回格式 3
   break;
  case 2:$this->month=date("m",$time);//返回格式 03
   break;
  case 3:$this->month=date("M",$time);//返回格式 Mar
   break;
  case 4:$this->month=date("F",$time);//返回格式 March
   break;
  default:$this->month=date("n",$time);
 }
 return $this->month; 
 }
 //返回当前时间的天数 time：时间格式为时间戳 2013-3-4 
 function getday($time="",$type=""){
 if($time==""){
  $time=time();
 }
 if($type==1){
  $this->day=date("d",$time);//返回格式 04
 }else{
  $this->day=date("j",$time);//返回格式 4
 }
 return $this->day;
 }
 //返回当前时间的小时  2010-11-10 1:19:21 20:19:21 
 function gethour($time="",$type=""){
 if($time==""){
  $time=time();
 } 
 switch($type){
  case 1:$this->hour=date("H",$time);//格式： 1 20
   break;
  case 2:$this->hour=date("h",$time);//格式  01 08
   break;
  case 3:$this->hour=date("G",$time);//格式  1 20
   break;
  case 4:$this->hour=date("g",$time);//格式  1 8
   break; 
  default :$this->hour=date("H",$time);
 }
 return $this->hour;
 }
 //返回当前时间的分钟数 1:9:18  
 function getminute($time="",$type=""){
 if($time==""){
  $time=time();
 }
 $this->minute=date("i",$time); //格式  09
 return $this->minute;
 }
 //返回当前时间的秒数  20:19:01
 function getsecond($time="",$type=""){
 if($time==""){
  $time=time();
 }
 $this->second=date("s",$time); //格式  01
 return $this->second;
 }
 //返回当前时间的星期数 
 function getweekday($time="",$type=""){
 if($time==""){
  $time=time(); 
 }
 if($type==1){
  $this->weekday=date("D",$time);//格式  Sun
 }else if($type==2){
  $this->weekday=date("l",$time); //格式 Sunday
 }else{
  $this->weekday=date("w",$time);//格式 数字表示 0--6
 }
 return $this->weekday;
 }
 //比较两个时间的大小 格式 2013-3-4 8:4:3  
 function compare($time1,$time2){
 $time1=strtotime($time1);
 $time2=strtotime($time2);
 if($time1>=$time2){  //第一个时间大于等于第二个时间 返回1 否则返回0
  return 1;
 }else{
  return -1;
 }
 }
 //比较两个时间的差值
 function diffdate($time1="",$time2=""){
 //echo $time1.'------'.$time2.'<br>';
 if($time1==""){
  $time1=date("Y-m-d H:i:s"); 
 }
 if($time2==""){ 
  $time2=date("Y-m-d H:i:s"); 
 }
 $date1=strtotime($time1);
 $date2=strtotime($time2);
 if($date1>$date2){
  $diff=$date1-$date2; 
 }else{
  $diff=$date2-$date1;
 }
 if($diff>=0){
  $day=floor($diff/86400);
  $hour=floor(($diff%86400)/3600);
  $minute=floor(($diff%3600)/60);
  $second=floor(($diff%60));
  $this->diffTime='相差'.$day.'天'.$hour.'小时'.$minute.'分钟'.$second.'秒'; 
 }
 return $this->diffTime;
 }
 //返回 X年X月X日
 function buildDate($time="",$type=""){
 if($type==1){   
  $this->longDate = $this->getyear($time) . '年' . $this->getmonth($time) . '月' . $this->getday($time) . '日';  
 }else{
  $this->longDate = $this->getyear($time) . '年' . $this->getmonth($time) . '月' . $this->getday($time) . '日'.$this->gethour($time).':'.$this->getminute($time).':'.$this->getsecond($time);  
 }
 return $this->longDate;  
 }
}
?>

I hope this article will be helpful to everyone in PHP programming.

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