Php calculates the difference between two dates: year, month, and day

In PHP programs, processing time is often encountered, for example, determining how long a user has been online and how many days has been logged on, the time difference between two posts or the log records between different operations. In this article, we will give an example of how PHP calculates the differences between the two dates: year, month, and day.

In PHP programs, processing time is often encountered, for example, determining how long a user has been online and how many days has been logged on, the time difference between two posts or the log records between different operations. In this article, we will give an example of how PHP calculates the differences between the two dates: year, month, and day.

 Strtotime ($ date2) {$ ymd = $ date2; $ date2 = $ date1; $ date1 = $ ymd;} list ($ y1, $ m1, $ d1) = explode ('-', $ date1); list ($ y2, $ m2, $ d2) = explode ('-', $ date2 ); $ y = $ m = $ d =$ _ m = 0; $ math = ($ y2-$ y1) * 12 + $ m2-$ m1; $ y = round ($ math/12); $ m = intval ($ math % 12); $ d = (mktime (0, 0, 0, $ m2, $ d2, $ y2)-mktime (0, 0, 0, $ m2, $ d1, $ y2)/86400; if ($ d <0) {$ m-= 1; $ d + = date ('J', mktime (0, 0, 0, $ m2, 0, $ y2);} $ m <0 & $ y-= 1; return array ($ y, $ m, $ d) ;}?>