Remove duplicates of AMP and comment pages from Google Analytics Top Content Widget

gtc_remove_duplicates.php

<?php

/**
 * Plugin Name: Google Analytics Widget - Remove AMP and comment page duplicates
 * Contributors: MarcDK
 * Donate link: http://paypal.me/marctoensing
 * Description: Remove AMP and comment pages from google analytics widget
 * Plugin URI:  https://gist.github.com/mtoensing/a9df8174c5923959dd9948cf9125b142/
 * Version:     1.0
 */

// http://stackoverflow.com/a/10514539/149761
function super_unique($array, $key)
{
    $temp_array = array();
    foreach ($array as &$v) {
        if (!isset($temp_array[$v[$key]])) {
            $temp_array[$v[$key]] =& $v;
        }
    }
    $array = array_values($temp_array);
    return $array;
}


function gtc_pages_filter_remove_duplicated_items($pages)
{
    $strings_to_exclude = array(
    '/amp/',
    '/comment-page-',
    '/blog/'
  );
    foreach ($pages as $index => &$page) {

      // get position of each string in array
      foreach ($strings_to_exclude as $string) {

          $last_string_start = strrpos($page['path'], $string);

          if ($last_string_start !== false) {
              $overflow = substr($page['path'], $last_string_start + 1, strlen($page['path']) );
              $page['path'] = str_replace($overflow, "", $page['path']);
          }
      }
    }
    $pages = super_unique($pages,'path');

    return $pages;
}


add_filter('gtc_pages_filter', 'gtc_pages_filter_remove_duplicated_items');