Как внедрить ссылку в PHP-файл?

У скрипта сайта вопросов-ответов Q2A есть PHP-файл qa-lang-question.php. Подскажите, пожалуйста, как в этом файле вставить ссылки? Если использую что-то подобное echo ' <a href="index1.php">page1</a>'; или echo "<a href='index.php'>Index Page</a>"; оно отображается на странице просто как текст.

Содержимое файла:

<?php
/*
    Question2Answer by Gideon Greenspan and contributors
    http://www.question2answer.org/
 
    File: qa-include/qa-lang-question.php
    Description: Language phrases for question page
 
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
    of the License, or (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    More about this license: http://www.question2answer.org/license.php
*/
 
    return array(
        '1_answer_title' => '1 Answer',
        'a_convert_to_c' => 'Convert this answer into a comment',
        'a_convert_to_c_on' => 'Convert this answer into a comment on:',
        'a_convert_warn' => 'Warning: This conversion cannot be reversed.',
        'a_convert_warn_cs' => 'Warning: This conversion cannot be reversed and will also move this answer\'s comments.',
        'close_duplicate' => 'This is a duplicate of another question',
        'close_duplicate_error' => 'The duplicate question could not be found - please try entering the number from a different question URL, e.g. 123.',
        'close_form_button' => 'Close question',
        'close_form_title' => 'Close this question',
        'close_original_note' => 'You can also enter the question number from the URL, e.g. 123.',
        'close_original_title' => 'URL of the original question:',
        'close_q_popup' => 'Close this question to any new answers',
        'close_reason_title' => 'Reason for closing this question:',
        'closed_as_duplicate' => 'closed as a duplicate of:',
        'closed_with_note' => 'closed with the note:',
        'comment_a_popup' => 'Add a comment on this answer',
        'comment_button' => 'comment',
        'comment_limit' => 'Too many comments received - please try again in an hour',
        'comment_must_be_approved' => 'Your account must be approved before you add a comment.',
        'comment_must_confirm' => 'Please ^5confirm your email address^6 to add a comment.',
        'comment_must_login' => 'Please ^1log in^2 or ^3register^4 to add a comment.',
        'comment_on_a' => 'On answer: ',
        'comment_on_q' => 'On question: ',
        'comment_q_popup' => 'Add a comment on this question',
        'delete_a_popup' => 'Delete this answer permanently',
        'delete_button' => 'delete',
        'delete_c_popup' => 'Delete this comment permanently',
        'delete_q_popup' => 'Delete this question permanently',
        'duplicate_content' => 'Your submission appears to be a duplicate.',
        'edit_a_popup' => 'Edit this answer',
        'edit_a_title' => 'Edit answer',
        'edit_button' => 'edit',
        'edit_c_popup' => 'Edit this comment',
        'edit_c_title' => 'Edit comment',
        'edit_must_confirm' => 'Please ^5confirm your email address^6 to edit this.',
        'edit_must_login' => 'Please ^1log in^2 or ^3register^4 to edit this.',
        'edit_q_popup' => 'Edit this question',
        'edit_q_title' => 'Edit Question',
        'example_tags' => 'Example tags: ',
        'flag_a_popup' => 'Flag this answer as spam or inappropriate',
        'flag_button' => 'flag',
        'flag_c_popup' => 'Flag this comment as spam or inappropriate',
        'flag_hide_button' => 'flag and hide',
        'flag_limit' => 'Too many posts flagged - please try again in an hour',
        'flag_must_confirm' => 'Please ^5confirm your email address^6 to flag posts.',
        'flag_must_login' => 'Please ^1log in^2 or ^3register^4 to flag posts.',
        'flag_not_allowed' => 'Flagging this is not allowed',
        'flag_q_popup' => 'Flag this question as spam or inappropriate',
        'follow_a_popup' => 'Ask a new question relating to this answer',
        'follow_button' => 'ask related question',
        'follows_a' => 'related to an answer for:',
        'follows_q' => 'about the question:',
        'hide_a_popup' => 'Hide this answer',
        'hide_button' => 'hide',
        'hide_c_popup' => 'Hide this comment',
        'hide_q_popup' => 'Hide this question',
        'matching_tags' => 'Matching tags: ',
        'max_tags_x' => 'A maximum of ^ tags are allowed',
        'min_tags_x' => 'Please provide at least ^ tag/s',
        'notify_email_note' => 'Privacy: Your email address will only be used for sending these notifications.',
        'q_category_label' => 'Category:',
        'q_content_label' => 'More information for the question:',
        'q_hidden_author' => 'This question has been hidden by its author',
        'q_hidden_flagged' => 'This question has been flagged and hidden',
        'q_hidden_other' => 'This question has been hidden',
        'q_notify_email' => 'Email me at this address if my question is answered or commented on:',
        'q_notify_label' => 'Email me if my question is answered or commented on',
        'q_notify_x_label' => 'Email me (^) if my question is answered or commented on',
        'q_tags_comma_label' => 'Tags - use comma (,) as a separator:',
        'q_tags_label' => 'Tags - use hyphens to combine words:',
        'q_title_label' => 'The question in one sentence:',
        'q_waiting_approval' => 'This question is waiting for approval',
        'q_waiting_your_approval' => 'This question is waiting for your approval',
        'q_your_waiting_approval' => 'Your question will be checked and approved shortly.',
        'recat_button' => 'recategorize',
        'recat_popup' => 'Change this question\'s category',
        'recat_q_title' => 'Recategorize question',
        'reject_a_popup' => 'Reject this answer',
        'reject_button' => 'reject',
        'reject_c_popup' => 'Reject this comment',
        'reject_q_popup' => 'Reject this question',
        'remove_q_favorites' => 'Remove this question from my favorites',
        'reopen_button' => 'reopen',
        'reopen_q_popup' => 'Reopen this question',
        'reply_button' => 'reply',
        'reply_c_popup' => 'Reply to this comment',
        'reshow_a_popup' => 'Reshow this answer',
        'reshow_button' => 'reshow',
        'reshow_c_popup' => 'Reshow this comment',
        'reshow_q_popup' => 'Reshow this question',
        'retag_button' => 'retag',
        'retag_cat_popup' => 'Change this question\'s category or tags',
        'retag_popup' => 'Change this question\'s tags',
        'retag_q_title' => 'Retag question',
        'save_silent_label' => 'Save silently to hide that this was edited',
        'select_popup' => 'Click to select as best answer',
        'select_text' => 'Best answer',
        'show_1_comment' => 'Show 1 comment',
        'show_1_previous_comment' => 'Show 1 previous comment',
        'show_x_comments' => 'Show ^ comments',
        'show_x_previous_comments' => 'Show ^ previous comments',
        'unflag_button' => 'unflag',
        'unflag_popup' => 'Remove the flag that you added',
        'unselect_popup' => 'Click to remove selection',
        'x_answers_title' => '^ Answers',
        'your_answer_title' => 'Your answer',
        'your_comment_a' => 'Your comment on this answer:',
        'your_comment_q' => 'Your comment on this question:',
    );
 
 
/*
    Omit PHP closing tag to help avoid accidental output
*/