Req #65696 [Opn->Dup]: Bug Calendar year 2016 with mktime()

Edit report at https://bugs.php.net/bug.php?id=65696&edit=1 ID: 65696 Updated by: nikic@php.net Reported by: philippe dot alcaina at hotmail dot fr Summary: Bug Calendar year 2016 with mktime() -Status: Open +Status: Duplicate Type: Feature/Change Request Package: *Calendar problems PHP Version: 5.5.3 Block user comment: N Private report: N New Comment: Duplicate of http://php.net/65694. Previous Comments: ------------------------------------------------------------------------ [2013-09-18 10:46:31] philippe dot alcaina at hotmail dot fr Description: ------------ I'm a french developer computer. For an internet tool I need to get a list of weeks after having selected one year and one month. By testing I found a BUG in the year 2016. PHP gives me: 1 January 2016 the number of week: 53 (instead of 1) January 31, 2016 the number of week: 4 (instead of 5) then the error shifts in other months. The system works correctly in 2013, 2014, 2015. Test script: --------------- I provide you sample of the code that allows me to build this list of weeks, I particularly use mktime () // timestamp of first day of month $time = mktime(0,0,0,$mois_select,1,$annee_select); // number of days of month $nbrJoursMois = intval(date('t',$time)); // the number of the first week $numSemaineDebutMois = intval(date('W', $time)); // timestamp of end month $timeFinMois = mktime(0,0,0,$mois_select,$nbrJoursMois,$annee_select); // the number of the last week $numSemaineFinMois = intval(date('W', $timeFinMois)); /**** Display results ****/ $annee_select = 2016 $mois_select = 1 $time = 1451602800 $nbrJoursMois = 31 $numSemaineDebutMois = 53 (Error) $timeFinMois = 1454194800 $numSemaineFinMoisnum = 4 (Error) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=65696&edit=1