PHP实现简单日历类编写

莫也

用PHP实现日历类的编写，供大家参考，具体内容如下
calendar.class.php

1. <?php
   
2. /*
   
3. * 创建一个日历类
   
4. *
   
5. *
   
6. */
   
7. //修改默认时区
   
8. date_default_timezone_set("PRC");
   
9. 
   
10. class Calendar {
    
11.   private $year;
    
12. private $month;
    
13. private $day; //当月总天数
    
14. private $first_week; //每月的第一天是星期几
    
15. 
    
16. //构造函数
    
17. function __construct() {
    
18.   $this->year = isset($_GET['year'])?$_GET['year']:date("Y");
    
19.   $this->month = isset($_GET["month"])?$_GET["month"]:date("m");
    
20.   $this->first_week = date("w", mktime(0, 0 ,0, $this->month, 1, $this->year));
    
21.   $this->day = date("t", mktime(0, 0 ,0, $this->month, 1, $this->year));
    
22. }
    
23. function showCalendar() {
    
24. //  echo $this->year."年".$this->month."月".$this->first_week."天".$this->day;
    
25.    echo "<table align='center'>"; //用表格输出
    
26.    $this->chageDate("index.php"); //用于用户调整年月份
    
27.   $this->weekList();//显示星期
    
28.   $this->dayList(); //显示天数
    
29.   
    
30.   echo "</table>";
    
31. }
    
32. //1、显示星期
    
33. private function weekList() {
    
34.   $week = array("日","一","二","三","四","五","六");
    
35.   echo "<tr>";
    
36.    for ($i = 0; $i < count($week); $i++) {
    
37.    echo "<th>".$week[$i]."</th>";
    
38.   }
    
39.   echo "</tr>";
    
40. }
    
41. //2.显示天数
    
42. private function dayList() {
    
43.   $color = "#2ca50c";
    
44.   echo "<tr>";
    
45.   for ($i = 0; $i < $this->first_week; $i++) { //输出空格，弥补当前月空缺部分
    
46.    echo "<td bgcolor='#2ca50c'> </td>";
    
47.   }
    
48.   for ($k = 1; $i <= $this->day; $k++) {
    
49.    $i++;
    
50.    if ($k == date("d")) echo "<td id='nowd'>".$k."</td>"; //是今天，加效果
    
51.    else echo "<td bgcolor=$color>".$k."</td>";
    
52.    if ($i % 7 == 0) {
    
53.    echo "</tr><tr>"; //每7天一次换行
    
54.    if ($i % 2 == 0) $color = "#2ca50c";
    
55.    else $color = "#9ddb27"; //实现各行换色的效果
    
56.    }
    
57.   }
    
58.   while ($i % 7 != 0) { //将剩余的空格补完
    
59.    echo "<td bgcolor='#2ca50c'> </td>";
    
60.   $i++;
    
61.   }
    
62.   echo "</tr>";
    
63. }
    
64.   
    
65. //3、用于用户调整天数
    
66. private function chageDate($url="index.php") {
    
67.   echo "<tr>";
    
68.    echo "<caption><h1>".$this->year."年".$this->month."月</h1></caption>";
    
69.   echo "</tr>";
    
70.   echo "<tr>";
    
71.   echo "<td>"."<a href='?".$this->prevYear($this->year,$this->month)."'>"."<"."</a>";
    
72.   echo "<td>"."<a href='?".$this->prevMonth($this->year,$this->month)."'>"."<<"."</a>";
    
73.   
    
74.   echo "<td colspan='3'>";
    
75.    echo '<select οnchange="window.location=\''.$url.'?year=\'+this.options[selectedIndex].value+\'&month='.$this->month.'\'">';
    
76.     for ($year = 2038; $year >= 1970; $year--) {
    
77.     $selected = ($year == $this->year)?"selected":"";
    
78.     echo '<option '.$selected. ' value="'.$year.'">'.$year.'</option>';
    
79.     //echo '<option '.$selected.' value="'.$year.'">'.$year.'</option>';
    
80.    }
    
81.    echo "</select>";
    
82.    
    
83.   echo '<select name="month" οnchange="window.location=\''.$url.'?year='.$this->year.'&month=\'+this.options[selectedIndex].value">';
    
84.   for($month=1;$month <= 12;$month++){
    
85.    $selected1 = ($month == $this->month) ? "selected" : "";
    
86.    echo '<option '.$selected1.' value="'.$month.'">'.$month.'</option>';
    
87.   }
    
88.   echo '</select>';
    
89.   echo "</td>";
    
90.   
    
91.   
    
92.   echo "<td>"."<a href='?".$this->nextMonth($this->year,$this->month)."'>".">>"."</a>";
    
93.   echo "<td>"."<a href='?".$this->nextYear($this->year,$this->month)."'>".">"."</a>";
    
94.   echo "</tr>";
    
95. }
    
96. 
    
97. private function prevYear($year, $month) { //获取上一年的数据
    
98.   $year--;
    
99.   if ($year < 1970) $year = 1970;
    
100.   return "year={$year}&month={$month}";
     
101. }
     
102. private function prevMonth($year, $month) {
     
103.   if ($month == 1) {
     
104.    $year--;
     
105.   if ($year < 1970) $year = 1970;
     
106.   $month = 12;
     
107.   }else $month--;
     
108.   return "year={$year}&month={$month}";
     
109. }
     
110. private function nextYear($year, $month) { //获取上一年的数据
     
111.   $year++;
     
112.   if ($year > 2038) $year = 2038;
     
113.   return "year={$year}&month={$month}";
     
114. }
     
115. private function nextMonth($year, $month) {
     
116.   if ($month == 12) {
     
117.    $year++;
     
118.   if ($year > 2038) $year = 2038;
     
119.   $month = 1;
     
120.   }else $month++;
     
121.   return "year={$year}&month={$month}";
     
122. }
     
123. }

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主页 index.php

1. <!doctype html>
   
2. <html>
   
3. <head>
   
4. <meta charset="utf-8">
   
5. <title>日历显示</title>
   
6. <style>
   
7. table {
   
8. border:1px solid #050;
   
9. margin: 100px auto;
   
10. }
    
11. th {
    
12.   width: 30px;
    
13. background-color: #0CC;
    
14. color: #fff;
    
15. height: 30px;
    
16. font-size: 20px;
    
17. }
    
18. #nowd {
    
19.   color: yellow;
    
20. background: #F00;
    
21. }
    
22. td {
    
23.   width: 30px;
    
24. text-align: center;
    
25. 
    
26. height: 25px;
    
27. color: #fff;
    
28. }
    
29. a {
    
30. display: block;
    
31. width: 35px;
    
32. height: 35px;
    
33. background: #0F9;
    
34.   text-decoration: none;
    
35. text-align: center;
    
36. line-height: 35px;
    
37. }
    
38. a:hover {
    
39.   background: #CF0;
    
40. color: #fff;
    
41. font-size: 20px;
    
42. }
    
43. </style>
    
44. </head>
    
45. 
    
46. <body>
    
47. <?php
    
48. include "calendar.class.php";
    
49. $ca = new Calendar();
    
50. $ca->showCalendar();
    
51. ?>
    
52. </body>
    
53. </html>

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