思路分析
1.在CalenDar.class.php中，封装每个月的日期信息。如果读者需要做日历，只需要将该文件作为一个类调用即可。
如下图
$calendar=new UtilCalenDar();
$info=$calendar->getCalendar();
echo json_encode($info);
//输出结果如下
[{"id":"2016-5-29","info":{"day":29,"type":1}},{"id":"2016-5-30","info":{"day":30,"type":1}},{"id":"2016-5-31","info":{"day":31,"type":1}},{"id":"2016-6-1","info":{"day":1,"type":2}},{"id":"2016-6-2","info":{"day":2,"type":2}},{"id":"2016-6-3","info":{"day":3,"type":2}},{"id":"2016-6-4","info":{"day":4,"type":2}},{"id":"2016-6-5","info":{"day":5,"type":2}},{"id":"2016-6-6","info":{"day":6,"type":2}},{"id":"2016-6-7","info":{"day":7,"type":2}},{"id":"2016-6-8","info":{"day":8,"type":2}},{"id":"2016-6-9","info":{"day":9,"type":2}},{"id":"2016-6-10","info":{"day":10,"type":2}},{"id":"2016-6-11","info":{"day":11,"type":2}},{"id":"2016-6-12","info":{"day":12,"type":2}},{"id":"2016-6-13","info":{"day":13,"type":2}},{"id":"2016-6-14","info":{"day":14,"type":2}},{"id":"2016-6-15","info":{"day":15,"type":2}},{"id":"2016-6-16","info":{"day":16,"type":2}},{"id":"2016-6-17","info":{"day":17,"type":2}},{"id":"2016-6-18","info":{"day":18,"type":2}},{"id":"2016-6-19","info":{"day":19,"type":2}},{"id":"2016-6-20","info":{"day":20,"type":2}},{"id":"2016-6-21","info":{"day":21,"type":2}},{"id":"2016-6-22","info":{"day":22,"type":2}},{"id":"2016-6-23","info":{"day":23,"type":2}},{"id":"2016-6-24","info":{"day":24,"type":2}},{"id":"2016-6-25","info":{"day":25,"type":2}},{"id":"2016-6-26","info":{"day":26,"type":2}},{"id":"2016-6-27","info":{"day":27,"type":2}},{"id":"2016-6-28","info":{"day":28,"type":2}},{"id":"2016-6-29","info":{"day":29,"type":2}},{"id":"2016-6-30","info":{"day":30,"type":2}},{"id":"2016-7-1","info":{"day":1,"type":3}},{"id":"2016-7-2","info":{"day":2,"type":3}},{"id":"2016-7-3","info":{"day":3,"type":3}},{"id":"2016-7-4","info":{"day":4,"type":3}},{"id":"2016-7-5","info":{"day":5,"type":3}},{"id":"2016-7-6","info":{"day":6,"type":3}},{"id":"2016-7-7","info":{"day":7,"type":3}},{"id":"2016-7-8","info":{"day":8,"type":3}},{"id":"2016-7-9","info":{"day":9,"type":3}}]
2.在WorkLog.class.php中，获取该用户上一个月、当前月、下一个月的工作信息，之所以使用一次性获取三个月的工作信息，因为如果每天的去读取，这样数据查询的次数过大，当然最好的还是做一下缓存比较好。读取到工作信息后，然后结合日历，判断每天是否工作，以及是否是周末，来决定日历中每个方格的背景样式。工作信息数据库如下图：
PS：这里再为大家分享几款本站的在线日期工具供大家参考：
在线万年历日历：
http://tools.jb51.net/bianmin/wannianli
网页万年历日历：
http://tools.jb51.net/bianmin/webwannianli
在线万年历黄历flash版：
