This Post Has 13 Comments

1. 

   Kisuka

   12 Dec 2013 Reply

   Why not just do this?

   echo date_create(‘1981-05-18’)->diff(date_create(‘today’))->y;

   1. 

      John Morris

      13 Dec 2013 Reply

      Updated. Thanks!

2. 

   horechekArtem

   12 Dec 2013 Reply

   diff($now);
   echo $diff->format(‘%y’);

3. 

   Sarah

   9 Aug 2014 Reply

   Hi John, will you please help me with something? I’m a custom field in wordpress where the user enters a date from a date picker. How do I grab that custom field and run this function on it? Thanks 🙂

   -Sarah

   1. 

      John Morris

      9 Aug 2014 Reply

      You’d use get_user_meta() to grab it from WordPress: http://codex.wordpress.org/Function_Reference/get_user_meta

      …then drop it into the function as needed.

      1. 

         Sarah

         9 Aug 2014 Reply

         Thanks for the quick reply!

         I’m actually doing a custom post type for a client for their testimonials with two fields- the testimonial itself and a date picker so they can manually input the dob. This would change the way I can display the data, then… any ideas?

         1. 

            John Morris

            9 Aug 2014 Reply

            Shouldn’t change anything. I’m assuming you want to return the person’s age from birthday. So in your template file where you’re displaying the testimonial, it’d be something like:

            $birthday = get_user_meta($post->ID, $custom_field_name, true);
            $age = birthday($birthday);

            echo $age;

            If I understanding what you’re saying… something like that should work.

            1. 

               Sarah

               10 Aug 2014

               function birthday($birthday){

               $age = strtotime($birthday);

               if($age === false){
               return false;
               }

               list($y1,$m1,$d1) = explode("-",date("Y-m-d",$age));

               $now = strtotime("now");

               list($y2,$m2,$d2) = explode("-",date("Y-m-d",$now));

               $age = $y2 - $y1;

               if((int)($m2.$d2) diff(date_create('today'))->y;

               return $age;
               }

               echo birthday($testimonial_age); ?>

            2. 

               Sarah

               10 Aug 2014

               I’m using this Fatal error: Cannot redeclare birthday()

            3. 

               John Morris

               10 Aug 2014

               You don’t need to use BOTH functions in the source code I posted. It’s one or the other. If you’re PHP 5.3 or greater than use the one on bottom. Chance are, you are on PHP 5.3 so I’d try it first. If it doesn’t work then use the top one. The error is because you’re declaring the function twice by copying all the code.

               Also, I’d recommend changing the function name to something besides just birthday() as that’s pretty generic. If this is in a plugin and you’re NOT using a class then you should be prefixing your function names. For example, my theme name is Evolution of Dance… so all the functions are prefixed with evd. So, I’d do evd_birthday().

            4. 

               Sarah

               10 Aug 2014

               function birthday_basc($birthday) {
               $birthday = get_post_meta($post->ID, ‘testimonial_age’, true);
               $age = $birthday;

               if($age === false){
               return false;
               }

               list($y1,$m1,$d1) = explode(“-“,date(“Y-m-d”,$age));

               $now = strtotime(“now”);

               list($y2,$m2,$d2) = explode(“-“,date(“Y-m-d”,$now));

               $age = $y2 – $y1;

               if((int)($m2.$d2) < (int)($m1.$d1))
               $age -= 1;

               return $age;
               }

               I made this a function in functions.php. Here's what I put in my template file:

               php birthday_basc();

               Nothing displays. I'm way out of my lane, here… obv. Thanks for your help!!

            5. 

               Sarah

               10 Aug 2014
4. 

   Michael Anderson

   6 Jan 2015 Reply

   Very smart way to do the job, congrats.

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