I need to calculate a date based on a membership but this has to done with timestamp to have a common numeric value. We've read almost the whole smarty.net documentation and couldn't find our solution.

This would have been our best trick:

{capture assign="end_date"}{latestcurrentmembership.end_date}{/capture}{$fin = $end_date|strtotime}

but either capture assign and strtotime seem to be working within CiviCRM. Any idea?

EDIT 1: capture assign works well, it's strtotime that seems to not work within CiviCRM

2 Answers 2

{capture assign="end_date"}{latestcurrentmembership.end_date}{/capture}

// convert it to strtotime
{assign var='end_date' value=$end_date|strtotime}


{assign var='end_date' value=$end_date|date_format:"%s"}

// display in date format 



  • this doesn't work, the pdf is triggered with a CiviRule based on a Tag and we can't even tick the check box without getting an error. Smarty is on '1' in settings. Do I need anything else in the configuration? We've tried other operations and they were effective. what you wrote is one of the variations we tried unsuccessfully. Mar 3, 2022 at 11:49
  • actually in your code it's thestrtotime that pertubates the sending of the e-mail :-( without it the e-mail is sent Mar 3, 2022 at 13:11
  • Instead of the strtotime, this works for me (on unix, but not windows): {$end_date|date_format:"%s"}
    – Demerit
    Mar 4, 2022 at 1:37
  • Thanks, @Demerit I have updated my answer with your suggestion. Mar 4, 2022 at 11:09
  • To make things more interesting - date_format is deprecated in Civi with Smarty 3+. So you're back to using strtotime. Feb 12 at 20:50

answer came later on:


I only add to subtract one year in seconds

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