PHP Learning Perpetual Calendar Writing-PHP Tutorial-php.cn

Many PHP novices may be confused when they first learn, not knowing what PHP can do and how to do it. This article uses PHP to write a perpetual calendar function so that everyone can learn how to use PHP.

The key points of using PHP to implement the perpetual calendar function:

Get the total number of days in the current month to be processed $days

Get the day of the week that the first day of the month to be processed is $dayofweek

The role of $days: knowing how many days there are in the month to be processed, you can output the number of days through a loop

The role of $dayofweek: only if you know that the 1st of each month is a week How many spaces (blanks) need to be output before outputting the number of days

The code of "perpetual calendar class" is as follows:

_table=""; $this->_year = isset($_GET["y"])?$_GET["y"]:date("Y"); $this->_month = isset($_GET["m"])?$_GET["m"]:date("m"); if ($this->_month>12){//处理出现月份大于12的情况 $this->_month=1; $this->_year++; } if ($this->_month<1){//处理出现月份小于1的情况 $this->_month=12; $this->_year--; } $this->_currentDate = $this->_year.'年'.$this->_month.'月份';//当前得到的日期信息 $this->_days = date("t",mktime(0,0,0,$this->_month,1,$this->_year));//得到给定的月份应有的天数 $this->_dayofweek = date("w",mktime(0,0,0,$this->_month,1,$this->_year));//得到给定的月份的 1号 是星期几 } /** * 输出标题和表头信息 */ protected function _showTitle() { $this->_table=""; $this->_table.=""; $this->_table .=""; $this->_table .=""; $this->_table .=""; $this->_table .=""; $this->_table .=""; $this->_table .=""; $this->_table .=""; $this->_table.=""; } /** * 输出日期信息 * 根据当前日期输出日期信息 */ protected function _showDate() { $nums=$this->_dayofweek+1; for ($i=1;$i<=$this->_dayofweek;$i++){//输出1号之前的空白日期 $this->_table.=""; } for ($i=1;$i<=$this->_days;$i++){//输出天数信息 if ($nums%7==0){//换行处理：7个一行 $this->_table.=""; }else{ $this->_table.=""; } $nums++; } $this->_table.="".$this->_currentDate."
星期日 星期一 星期二 星期三 星期四 星期五 星期六
 $i
$i
"; $this->_table.="_year)."&m=".($this->_month-1)."'>上一月 "; $this->_table.="_year)."&m=".($this->_month+1)."'>下一月
"; } /** * 输出日历 */ public function showCalendar() { $this->_showTitle(); $this->_showDate(); echo $this->_table; } } $calc=new Calendar(); $calc->showCalendar();

".$this->_currentDate."
星期日	星期一	星期二	星期三	星期四	星期五	星期六
	$i
$i

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