PHP calculates the day interval

At the beginning, when I did not check the PHP manual, I had to use the old method,CodeIs implemented in this way:

 

 $ Date_1 = Date ('Y-m-d' );  $ Date_2 = '2017-07-16' ;  $ Date1_arr = Explode ("-", $ Date_1  );  $ Date2_arr = Explode ("-",$ Date_2  );  $ Day1 = Mktime (0, 0, 0, $ Date1_arr [1], $ Date1_arr [2], $ Date1_arr [0 ]);  $ Day2 = Mktime (0, 0, 0, $ Date2_arr [1], $ Date2_arr [2], $ Date2_arr [0]);  $ Days = Round (( $ Day2 - $ Day1 )/3600/24 );  Echo   $ Days ; Exit ;

 

Then google. It is found that there is a date_diff method in the PHP manual, that is, the datetime class is instantiated, And the diff method is called: PHP version> = 5.3 is valid.

 

<? PHP  $ Datetime1 =New Datetime ('2017-10-11' );  $ Datetime2 = New Datetime ('2017-10-13' );  $ Interval = $ Datetime1 -> Diff ( $ Datetime2  );  Echo   $ Interval -> Format ('% R % A days' ); ?> <? PHP  $ Datetime1 = Date_create ('2017-10-11' );  $ Datetime2 = Date_create ('2017-10-13' );  $ Interval = Date_diff ( $ Datetime1 , $ Datetime2  );  Echo   $ Interval -> Format ('% R % A days' ); ?>

 

Both methods can be implemented.

Address: http://blog.csdn.net/jucrazy/article/details/6605890