PKPString::enumerateAlphabetically PHP Method

    static function enumerateAlphabetically($steps)
    {
        return chr(ord('A') + $steps);
    }

 /**
  * Import all free-text/review form reviews to paste into message
  * @param $args array
  * @param $request PKPRequest
  * @return JSONMessage JSON object
  */
 function importPeerReviews($args, $request)
 {
     // Retrieve the authorized submission.
     $submission = $this->getAuthorizedContextObject(ASSOC_TYPE_SUBMISSION);
     // Retrieve the current review round.
     $reviewRound = $this->getAuthorizedContextObject(ASSOC_TYPE_REVIEW_ROUND);
     // Retrieve peer reviews.
     $reviewAssignmentDao = DAORegistry::getDAO('ReviewAssignmentDAO');
     $submissionCommentDao = DAORegistry::getDAO('SubmissionCommentDAO');
     $reviewFormResponseDao = DAORegistry::getDAO('ReviewFormResponseDAO');
     $reviewFormElementDao = DAORegistry::getDAO('ReviewFormElementDAO');
     $reviewAssignments = $reviewAssignmentDao->getBySubmissionId($submission->getId(), $reviewRound->getId());
     $reviewIndexes = $reviewAssignmentDao->getReviewIndexesForRound($submission->getId(), $reviewRound->getId());
     AppLocale::requireComponents(LOCALE_COMPONENT_PKP_SUBMISSION);
     $body = '';
     $textSeparator = '------------------------------------------------------';
     foreach ($reviewAssignments as $reviewAssignment) {
         // If the reviewer has completed the assignment, then import the review.
         if ($reviewAssignment->getDateCompleted() != null && !$reviewAssignment->getCancelled()) {
             // Get the comments associated with this review assignment
             $submissionComments = $submissionCommentDao->getSubmissionComments($submission->getId(), COMMENT_TYPE_PEER_REVIEW, $reviewAssignment->getId());
             $body .= "<br><br>{$textSeparator}<br>";
             // If it is an open review, show reviewer's name.
             if ($reviewAssignment->getReviewMethod() == SUBMISSION_REVIEW_METHOD_OPEN) {
                 $body .= $reviewAssignment->getReviewerFullName() . "<br>\n";
             } else {
                 $body .= __('submission.comments.importPeerReviews.reviewerLetter', array('reviewerLetter' => PKPString::enumerateAlphabetically($reviewIndexes[$reviewAssignment->getId()]))) . "<br>\n";
             }
             while ($comment = $submissionComments->next()) {
                 // If the comment is viewable by the author, then add the comment.
                 if ($comment->getViewable()) {
                     $body .= PKPString::html2text($comment->getComments()) . "\n\n";
                 }
             }
             $body .= "<br>{$textSeparator}<br><br>";
             if ($reviewFormId = $reviewAssignment->getReviewFormId()) {
                 $reviewId = $reviewAssignment->getId();
                 $reviewFormElements = $reviewFormElementDao->getByReviewFormId($reviewFormId);
                 if (!$submissionComments) {
                     $body .= "{$textSeparator}\n";
                     $body .= __('submission.comments.importPeerReviews.reviewerLetter', array('reviewerLetter' => PKPString::enumerateAlphabetically($reviewIndexes[$reviewAssignment->getId()]))) . "\n\n";
                 }
                 while ($reviewFormElement = $reviewFormElements->next()) {
                     $body .= PKPString::html2text($reviewFormElement->getLocalizedQuestion()) . ": \n";
                     $reviewFormResponse = $reviewFormResponseDao->getReviewFormResponse($reviewId, $reviewFormElement->getId());
                     if ($reviewFormResponse) {
                         $possibleResponses = $reviewFormElement->getLocalizedPossibleResponses();
                         if (in_array($reviewFormElement->getElementType(), $reviewFormElement->getMultipleResponsesElementTypes())) {
                             if ($reviewFormElement->getElementType() == REVIEW_FORM_ELEMENT_TYPE_CHECKBOXES) {
                                 foreach ($reviewFormResponse->getValue() as $value) {
                                     $body .= "\t" . PKPString::html2text($possibleResponses[$value]) . "\n";
                                 }
                             } else {
                                 $body .= "\t" . PKPString::html2text($possibleResponses[$reviewFormResponse->getValue()]) . "\n";
                             }
                             $body .= "\n";
                         } else {
                             $body .= "\t" . PKPString::html2text($reviewFormResponse->getValue()) . "\n\n";
                         }
                     }
                 }
                 $body .= "{$textSeparator}\n\n";
             }
         }
     }
     if (empty($body)) {
         return new JSONMessage(false, __('editor.review.noReviews'));
     } else {
         return new JSONMessage(true, $body);
     }
 }