Reply To: Use repeater field for percentage based A/B testing

• John Huebner

• November 5, 2021 at 1:31 pm

Sorry for the late reply on this. Like I said you would need to do away with the rand part.

I would create 2 more fields, one to hold a number between 1 and 100 for the % of time to show something and another to hold the number of times it is shown.

<?php 
  // get_the_options
  $options = get_field('after_options', 'option');
  // this will be set to index to show
  $show_index = false;
  // get totals
  $shown_total = 0;
  foreach ($options as $index => $row) {
    $shown_total = $row['times_shown'];
  }
  // find the first one shown less times than its % to be shown
  foreach ($options as $index => $row) {
    $percent = 0;
    if ($shown_total > 0) {
      // prevent divide by 0
      $percent = round($row['times_shown']/$shown_total, 2)*100; 
    }
    // if this one is < % for this one to be shown then pick it and exit loop
    if ($percent < $row['percent_to_show']) {
      $show_index = $index;
      break;
    }
  }
  // if all rows have been shown the % it should be shown or more
  // $show_index will be false
  // pick a random one to show
  if (!$show_index) 
    $show_index = array_rand($options);
  }
  // update the number of times this row has been shown
  // and update the row
  $row = $options[$show_index];
  $row['times_shown']++;
  update_row('after_options', $show_index, $row, 'option');
  // get the value to show
  $signupHTML = $row['html'];