Age based on date of birth (considering leap years)

Mainly considering the case of leap years, if someone was born in 2.29, then not a leap year then 2.28 will be counted function Age ($birth) { $age = Array (); $now = Date (' Ymd '); $now = "20110228"; Decomposition current date is month day $nowyear = (int) ($now/10000); $nowmonth = (int) (($now% 10000)/100); $nowday = $now% 100; Decomposition date of birth is month day $birthyear = (int) ($birth/10000); $birthmonth = (int) (($birth% 10000)/100); $birthday = $birth% 100; $year = $nowyear-$birthyear; if ($birthmonth > $nowmonth) { $year--; }else if ($birthmonth = = $nowmonth) { if ($birthday ==29&& $birthmonth =2) { /* if ($nowyear >3200| | ($nowyear%3200==0&& $nowyear%172800==0)) { if ($birthday > $nowday) { $year--; } }else if ($nowyear ==3200) { if (($birthday > $nowday) && $nowday!=28) { $year--; } }else * * if ($nowyear%400==0| | (($nowyear%4==0) && ($nowyear%100!=0))) { if ($birthday > $nowday) { $year--; } } } } return $year; } Copy Code

