# How does PHP calculate the age and domain name age? YYYY-mm-dd is known. Domain age

Source: Internet
Author: User
How does PHP calculate the age and domain name age? YYYY-mm-dd is known. Ask for the domain name age. How to calculate domain names has been plagued for a long time. I wrote a function myself, but it is wrong, because some years are in a leap year. & Lt ;? Php & nbsp; // Time input must be in the unit function & nbsp PHP. how do I calculate the age and domain name age? YYYY-mm-dd is known. Ask for the domain name age.
How to calculate domain names has been plagued for a long time. I wrote a function myself, but it is wrong, because some years are in a leap year.

```
// The unit required for time inputFunction mathAge (\$ ymd2 ){\$ Ymd1 = "2012-2-27 ";@ List (\$ y1, \$ m1, \$ d1) = explode ("-", date ("Y-m-d", strtotime (\$ ymd1 )));@ List (\$ y2, \$ m2, \$ d2) = explode ("-", date ("Y-m-d", strtotime (\$ ymd2 )));\$ Arr = array ("Year" => round (\$ y1-\$ y2 ),"Month" => round (\$ m1-\$ m2 ),"Day" => round (\$ d1-\$ d2 ),);\$ Arr ["day"] = round (\$ d1-\$ d2 );While (\$ arr ["day"] <0 ){\$ Arr ["day"] + = 30;\$ Arr ["month"]-= 1;}While (\$ arr ["month"] <0 ){\$ Arr ["month"] + = 12;\$ Arr ["year"]-= 1;}\$ Txt = '';Foreach (\$ arr as \$ k => \$ v){If (! \$ V) continue;\$ Txt. = \$ v. \$ k;}Echo "\$ ymd1-\$ ymd2 = \$ txt \ n ";Return \$ txt;}\$ DateArr = array ("2011-12-28 ","2011-12-29 ","2011-12-27 ","2010-12-28 ","2010-12-29 ","2010-12-27 ","2011-10-1 ","2010-5-1 ","2010-2-28 ","1995-1-1 ","1995-12-31 ",);Foreach (\$ dateArr as \$ date){MathAge (\$ date );}?>```

The output test content is as follows:

`January 29-= dayJanuary 28-= dayFebruary-January 29-January 28-February-April 26-2011-10-1 = OctoberSeptember 26-November 29-= 1-January 26-= 17-January 26-`

How can we calculate the year and month of the difference between two dates? The leap year May.
------ Solution --------------------
Well, I am not very clear about it, but I 'd like to discuss it with you.
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