zend-framework - Zend_Date 比较两个日期

Question

我有两个日期作为Zend_Date(). 我必须检查以下内容：

1. 如果这些日期在同一个月的某一天（例如：每月的第二天，年份无关紧要），
2. 如果日期来自同一天（例如 2012 年 12 月 2 日）；

Answer 1

To check the dates are the exact same day, you can check each individual part separately.

Zend_Date('your-date-here',Zend_Date::DAY); 

This returns a date object that specifically gives you the day for the 'your-date-here' and it accepts a variety of formats; for example, I use php's date function as:

$myDate = date('Y-m-d-H-i-s');  
$dateDayObject = Zend_Date($myDate, Zend_Date::DAY);  

and now $dateDayObject will have the value of the 'd' in it.
You can use DAY, WEEK, YEAR... there are many constant all defined here:

http://framework.zend.com/manual/1.12/en/zend.date.constants.html

Finally, to test if they are in the same day of the month, you can use a combination of loops and if statement and the same method as above to write your own function to check the day within the month or there may be a defined constant for it. Good luck.