note 120933 added to datetime.setdate

Be carreful about this bug in php 5.6 and lower (fixed in php 7.0 and higher) : <?php $date = new DateTime("first day of last month"); echo $date->format('Y-m-d'); echo ' => ' ; $date->setDate(2013, 2, 3); echo $date->format('Y-m-d'); ?> Output <=5.6 : 2017-03-01 => 2013-02-01 Output >=7.0 : 2017-03-31 => 2013-02-03 Same goes for "Last day of last month", and the funny part, it will take the last day of the new month setted by setDate Example with a Leap Year : <?php $date = new DateTime("last day of last month"); echo $date->format('Y-m-d'); echo ' => ' ; $date->setDate(2012, 2, 3); echo $date->format('Y-m-d'); ?> Output <=5.6 : 2017-03-31 => 2012-02-29 Output >=7.0 : 2017-03-31 => 2012-02-03 ---- Server IP: 194.50.97.16 Probable Submitter: 82.230.174.150 ---- Manual Page -- http://php.net/manual/en/datetime.setdate.php Edit -- https://master.php.net/note/edit/120933 Del: integrated -- https://master.php.net/note/delete/120933/integrated Del: useless -- https://master.php.net/note/delete/120933/useless Del: bad code -- https://master.php.net/note/delete/120933/bad+code Del: spam -- https://master.php.net/note/delete/120933/spam Del: non-english -- https://master.php.net/note/delete/120933/non-english Del: in docs -- https://master.php.net/note/delete/120933/in+docs Del: other reasons-- https://master.php.net/note/delete/120933 Reject -- https://master.php.net/note/reject/120933 Search -- https://master.php.net/manage/user-notes.php