PHP check if two Datetimes are not on the same calendar day

Question

I have two Datetimes like this (the dates being actually $vars)

$startTime = \\DateTime::createFromFormat(\'Y/m/d H:i\', \'2015/01/01 23:00\');
$endTime = \\Date         


        

Answer 1

Just create the dates with time set to 00:00:00:

$startTime = \DateTime::createFromFormat('Y/m/d H:i:s', '2015/01/01 00:00:00');
$endTime = \DateTime::createFromFormat('Y/m/d H:i:s', '2015/01/02 00:00:00');

or reset time to zero on existing dates:

$startTime->setTime(0, 0, 0);
$endTime->setTime(0, 0, 0);

then it should work:

$diff = $startTime->diff($endTime);
$days = $diff->format('%d');

echo $days; // 1

Bonus

If you want to work only with dates, remember to set the time to 00:00:00 in createFromFormat or reset it with setTime. If you won't provide time in createFromFormat PHP will set it to the current time:

$date = DateTime::createFromFormat('Y-m-d', '2016-01-21');
print $date->format('H:i:s'); //not 00:00:00

To fix it, you must either:

• provide 00:00:00 time in format:

  $date = DateTime::createFromFormat('Y-m-d H:i:s', '2016-01-21 00:00:00');

• prefix the date format with exclamation mark and omit the time, this will set the time to 00:00:00 automatically:

  $date = DateTime::createFromFormat('!Y-m-d', '2016-01-21');

• reset the time after creation:

  $date = DateTime::createFromFormat('Y-m-d', '2016-01-21'); $date->setTime(0, 0);