https://legacy.forums.gravityhelp.com/topic/calculate-time-difference Gravity Support Forums Topic: Calculate Time Difference en-US Mon, 20 Apr 2026 02:52:10 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/calculate-time-difference#post-69701 Mon, 06 Aug 2012 13:30:11 +0000 David Peralty 69701@https://legacy.forums.gravityhelp.com/ <p>Beautiful code. Good job. </p> https://legacy.forums.gravityhelp.com/topic/calculate-time-difference#post-69700 Mon, 06 Aug 2012 13:27:13 +0000 HeavyMetalAdam 69700@https://legacy.forums.gravityhelp.com/ <p>Couldn't get back to this for a bit, but if anyone else is interested, here's the code I through together successfully....</p> <p><a href="http://pastebin.com/hySGFnLt" rel="nofollow">http://pastebin.com/hySGFnLt</a> </p> https://legacy.forums.gravityhelp.com/topic/calculate-time-difference#post-67576 Mon, 23 Jul 2012 16:05:41 +0000 David Peralty 67576@https://legacy.forums.gravityhelp.com/ <p>To do that, you'll need to do some PHP coding.</p> <p>Create a field called length.<br /> Check off it being allowed to be populated dynamically<br /> Give it a CSS class of hidden<br /> In your style.css add:<br /> <pre><code>.hidden { display: none; }</code></pre> <p>In your functions.php file you will want to use the following hook:<br /> <a href="http://www.gravityhelp.com/documentation/page/Gform_pre_submission" rel="nofollow">http://www.gravityhelp.com/documentation/page/Gform_pre_submission</a></p> <p>And then look at the following information:<br /> <a href="http://php.net/manual/en/function.date.php" rel="nofollow">http://php.net/manual/en/function.date.php</a></p> <p><a href="http://stackoverflow.com/questions/676824/how-to-calculate-the-difference-between-two-dates-using-php" rel="nofollow">http://stackoverflow.com/questions/676824/how-to-calculate-the-difference-between-two-dates-using-php</a></p> <p>At the end, you should have an invisible form field that upon submission of the form gets the value of the difference between the two dates. </p> https://legacy.forums.gravityhelp.com/topic/calculate-time-difference#post-67571 Mon, 23 Jul 2012 15:13:17 +0000 HeavyMetalAdam 67571@https://legacy.forums.gravityhelp.com/ <p>Just stored with the entry so it's available in the results/export. </p> https://legacy.forums.gravityhelp.com/topic/calculate-time-difference#post-67557 Mon, 23 Jul 2012 14:30:37 +0000 Chris Hajer 67557@https://legacy.forums.gravityhelp.com/ <p>Does the length of time need to be available in the form before submission for a calculation, or does it just need to be stored with the entry? </p> https://legacy.forums.gravityhelp.com/topic/calculate-time-difference#post-67544 Mon, 23 Jul 2012 12:50:39 +0000 HeavyMetalAdam 67544@https://legacy.forums.gravityhelp.com/ <p>In my form, I have a start time and end time. I would like to have a dynamically calculated field that contains the length of time from start time to end time. </p> <p>I can't seem to find anything like this already in the forums or documentation, and the calculation field seems to exclude the time fields. </p>