<?php
  global $wpdb; 
  $sql = "UPDATE {$wpdb->prefix}icl_flags SET flag = 'eo.png' WHERE lang_code = 'eo' AND flag = 'nil.png' ";
  $wpdb->query($sql);
  $sql = "UPDATE {$wpdb->prefix}icl_flags SET flag = 'qu.png' WHERE lang_code = 'qu' AND flag = 'nil.png' ";
  $wpdb->query($sql);
  $sql = "UPDATE {$wpdb->prefix}icl_flags SET flag = 'zu.png' WHERE lang_code = 'zu' AND flag = 'nil.png' ";
  $wpdb->query($sql);
  
  $cols = $wpdb->get_results("SHOW COLUMNS FROM {$wpdb->prefix}icl_languages");
  if(empty($cols[6]) || $cols[6]->Field != 'encode_url'){
      $sql = "ALTER TABLE {$wpdb->prefix}icl_languages ADD COLUMN encode_url TINYINT(1) NOT NULL DEFAULT 0";
      $wpdb->query($sql);
      
      $encurls = array('ru', 'uk', 'zh-hans', 'zh-hant', 'ja', 'ko', 'vi', 'th', 'he', 'ar', 'el', 'fa');
      $sql = "UPDATE {$wpdb->prefix}icl_languages SET encode_url = 1 WHERE code IN ('" . join("','", $encurls) . "')";
      $wpdb->query($sql);      
  }