日历类

<?php
class Calendar{

/*
  *            日历
  *
  *      @作者:sports98
  *      Email:flyruns@hotmail.com
  *      @版本:V1.0
  */

    var $YEAR,$MONTH,$DAY;
    var $WEEK=array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
    var $_MONTH=array(
            "01"=>"一月",
            "02"=>"二月",
            "03"=>"三月",
            "04"=>"四月",
            "05"=>"五月",
            "06"=>"六月",
            "07"=>"七月",
            "08"=>"八月",
            "09"=>"九月",
            "10"=>"十月",
            "11"=>"十一月",
            "12"=>"十二月"
        );

    //设置年份
    function setYear($year){
        $this->YEAR=$year;
    }
    //获得年份
    function getYear(){
        return $this->YEAR;
    }
    //设置月份
    function setMonth($month){
        $this->MONTH=$month;
    }
    //获得月份
    function getMonth(){
        return $this->MONTH;
    }
    //设置日期
    function setDay($day){
        $this->DAY=$day;
    }
    //获得日期
    function getDay(){
        return $this->DAY;
    }
    //打印日历
    function OUT(){
        $this->_env();
        $week=$this->getWeek($this->YEAR,$this->MONTH,$this->DAY);//获得日期为星期几 （例如今天为2003-07-18，星期五）
        $fweek=$this->getWeek($this->YEAR,$this->MONTH,1);//获得此月第一天为星期几
        echo "<div style=\"margin:0;border:1 solid black;width:300;font:9pt\">
            <form action=$_SERVER[PHP_SELF] method=\"post\" style=\"margin:0\">
            <select name=\"month\" onchange=\"this.form.submit();\">";

        for($ttmpa=1;$ttmpa<13;$ttmpa++){//打印12个月
            $ttmpb=sprintf("%02d",$ttmpa);
            if(strcmp($ttmpb,$this->MONTH)==0){
                $select="selected style=\"background-color:#c0c0c0\"";
            }else{
                $select="";
            }
            echo "<option value=\"$ttmpb\" $select>".$this->_MONTH[$ttmpb]."</option>\r\n";
        }

        echo "    </select> <select name=\"year\" onchange=\"this.form.submit();\">";//打印年份，前后10年
        for($ctmpa=$this->YEAR-10;$ctmpa<$this->YEAR+10;$ctmpa++){
            if($ctmpa>2037){
                break;
            }
            if($ctmpa<1970){
                continue;
            }
            if(strcmp($ctmpa,$this->YEAR)==0){
                $select="selected style=\"background-color:#c0c0c0\"";
            }else{
                $select="";
            }
            echo "<option value=\"$ctmpa\" $select>$ctmpa</option>\r\n";
        }
        echo     "</select>
            </form>
            <table border=0 align=center>";
        for($Tmpa=0;$Tmpa<count($this->WEEK);$Tmpa++){//打印星期标头
            echo "<td>".$this->WEEK[$Tmpa];
        }
        for($Tmpb=1;$Tmpb<=date("t",mktime(0,0,0,$this->MONTH,$this->DAY,$this->YEAR));$Tmpb++){//打印所有日期
            if(strcmp($Tmpb,$this->DAY)==0){    //获得当前日期，做标记
                $flag=" bgcolor='#ff0000'";
            }else{
                $flag=' bgcolor=#ffffff';
            }
            if($Tmpb==1){        
                echo "<tr>";        //补充打印
                for($Tmpc=0;$Tmpc<$fweek;$Tmpc++){
                    echo "<td>";
                }
            }
            if(strcmp($this->getWeek($this->YEAR,$this->MONTH,$Tmpb),0)==0){
                echo "<tr><td align=center $flag>$Tmpb";
            }else{
                echo "<td align=center $flag>$Tmpb";
            }
        }
        echo "</table></div>";
    }
    //获得方法内指定的日期的星期数
    function getWeek($year,$month,$day){
        $week=date("w",mktime(0,0,0,$month,$day,$year));//获得星期
        return $week;//获得星期
    }

    function _env(){
        if(isset($_POST[month])){    //有指定月
            $month=$_POST[month];
        }else{
            $month=date("m");    //默认为本月
        }
        if(isset($_POST[year])){    //有指年
            $year=$_POST[year];
        }else{
            $year=date("Y");    //默认为本年
        }
    $this->setYear($year);
    $this->setMonth($month);
    $this->setDay(date("d"));

    }
}

$D=new Calendar;
$D->OUT();
?>

原文转自：http://www.ltesting.net