David_5-1's comments

David_5-1 · on May 4, 2015

PHP : 1 week is not always 7 days:

  $_1week = new DateInterval("P1W");
  $_7days = new DateInterval("P7D");
  var_dump($_1week == $_7days); // true
  var_dump($_1week);
  var_dump($_1week == $_7days); // false
  var_dump($_7days);
  var_dump($_1week == $_7days); // true

http://3v4l.org/CcAk8

Same result with '$_1week = new DateInterval("P7D");' :-)