when HiFi is just not an option

To achieve this recipe, simply open your functions.php file and paste the following code in it:

function is_old_post($post_id=null){
   $days = 15;
   global $wp_query;
   if(is_single() || is_page()) {
      if(!$post_id) {
         $post_id = $wp_query->post->ID;
      }
      $current_date = time();
      $offset = $days *60*60*24;
      $post_id = get_post($post_id);
      $post_date = mysql2date('U',$post_id->post_date);
      $cunning_math = $post_date + $offset;
      $test = $current_date - $cunning_math;
      if($test > 0){
         $return = true;
      }else{
         $return = false;
      }
   }else{
      $return = false;
   }
   return $return;
}

Once done, you are now ready to call the functions in your single.php template as shown below:

<?php if(is_old_post()){ ?>
INSERT AD CODE HERE
<?php } ?>

That's all, you're done. By default, ads will be displayed on post older than 15 days. To change this value, simply edit the $days variable on line 2.

This recipe has been initially published on my other blog Cats Who Blog. If you haven't yet, you shoul definitely visit it!

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WordPress hack : How to display ads on old posts only

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