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 FileMaker Pro Custom Functions

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DateDifference ( date1 ; date2 ; format )

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  Average rating: 3.9  (41 votes)
  Discuss this Custom Function

Paul Jansen, APJ Ltd
http://www.apjuk.com

Calculate age ( years, months, weeks and days between 2 any two dates

Sample Input:
DateDifference ( 29/02/2000 ; 31/03/2006 ; format )
Sample Output:
6 years, 1 months, 0 weeks 2 days


 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed

Description:

Thsi function calculates the age between two dates. The output is determined by the third parameter.



Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it

Discuss:

5 most recent comments | Show all 8 comments

Rob,

I will look at this as you make a very good point.

Paul Jansen, London, England
September 23, 2010 11:20am

Modified to remove a couple of bugs and to add options for total days, total whole months or total whole weeks.

Paul Jansen, London, England
April 13, 2011 3:35pm

how to create the fornat options

Ahmed, Oman
October 11, 2011 9:43pm

Adding the following after '//total counts' provides nicer formatting for 'long' and 'longweeks' where days, weeks, months or years is 0.

// set text variables - Added by Juergen May 2016-04-19
yText = If ( y = 0 ; "" ; Case ( y = 1 ; y & " year" ; y & " year" ) ) ;
mText = If ( m = 0 ; "" ; Case ( m = 1 ; m & " month" ; m & " months" ) ) ;
dText = If ( d = 0 ; "" ; Case ( d = 1 ; d & " day" ; d & " days" ) ) ;
wText = If ( w = 0 ; "" ; Case ( w = 1 ; w & " week" ; dw & " weeks" ) ) ;
dwText = If ( dw = 0 ; "" ; Case ( dw = 1 ; dw & " day" ; dw & " days" ) ) ;
longText = Substitute ( List ( yText ; mText ; dText ) ; ¶ ; ", " ) ;
longweeksText = Substitute ( List ( yText ; mText ; wText ; dwText ) ; ¶ ; ", " )

Juergen May, Bristol
April 19, 2016 2:44pm

This line:

yText = If ( y = 0 ; "" ; Case ( y = 1 ; y & " year" ; y & " year" ) ) ;

Should read:

yText = If ( y = 0 ; "" ; Case ( y = 1 ; y & " year" ; y & " years" ) ) ;

(I missed the 's' off of 'years')

Juergen May, Bristol
April 19, 2016 3:53pm

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