code: public function formatForExport($trans, $options = null)
      {
          $text = "<?php\n\nreturn " . (($options & self::OPT_USE_SHORT_ARRAY) ? "[\n" : "array(\n");
  
          // create sections to match the comments
          $iMax = count($this->sections);
          $sections = array_fill(0, $iMax + 1, []);
  
          // assemble keys by sections
          foreach ($trans as $key => $value) {
              if (array_key_exists($key, $this->firstLevelKeys)) {
                  $sections[$this->firstLevelKeys[$key]['section'] + 1][$key] = $value;
              } else {
                  $sections[$iMax ? 1 : 0][$key] = $value;
              }
          }
  
          if ($options & self::OPT_PRESERVE_EMPTY_ARRAYS) {
              foreach ($this->firstLevelKeys as $key => $keyData) {
                  if (!array_key_exists($key, $trans) && ($keyData['data_format'] === '[' || $keyData['data_format'] === 'array(')) {
                      // add it to its section
                      $sections[$keyData['section'] + 1][$key] = [];
                  }
              }
          }
  
          for ($i = 0; $i < $iMax + 1; $i++) {
              if ($i) {
                  $text .= $this->sections[$i - 1];
              }
  
              if ($sections[$i]) $text .= $this->formatSection($sections[$i], $options);
          }
  
          $text .= (($options & self::OPT_USE_SHORT_ARRAY) ? "]" : ")") . ";\n";
          return $text;
      }
docs: @param      array $trans translation to output
  @param null|integer $options formatting options
  
  @return string result of output of translations taking sections into account