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determining the difference between two dateTimes [message #174347]

Mon, 06 June 2011 14:47

bill
Messages: 310
Registered: October 2010

Karma:

Senior Member

In a scheduling program I need to check to see if there is a
conflict between an existing appointment and one that is to be
entered. I figured that I would use dateTime::diff

the existing appointment is returned as $row['apptTime'], the
appt being tested is $dateTM

$TAptEnd = $dateTM->add(new DateInterval('PT' . $duration .'M'));

$date = new DateTime($row['apptTime']); //dateTime object
of the beginning of the next appt
$diff = $date->diff($TAptEnd,true); //difference between
the beginning of an existing appt and the end of
the testing.

if ($diff->format('%i') <0 ) return 1;

I am running into several problems that suggest that this is not
the best way to go about this.

1: if the next appointment is the next day I am getting only the
time difference between the appointments, eg 10 min, not the
whole time. I would expect the difference to be 24 * 60 + 10,
not just the 10.

2: if I need to use the day + hours + minutes it gets really messy.

Suggestions please.

bill

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[Message index]

		determining the difference between two dateTimes By: bill on Mon, 06 June 2011 14:47
		Re: determining the difference between two dateTimes By: The Natural Philosoph on Mon, 06 June 2011 16:00
		Re: determining the difference between two dateTimes By: Jerry Stuckle on Mon, 06 June 2011 17:58
		Re: determining the difference between two dateTimes By: bill on Tue, 07 June 2011 10:45

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