Comment 0 for bug 1836588

When we post English and Japanese comments on a page "Add comment" field, only Japanese characters are corrupted as the attached screenshot (mahara_comment.png).

We can fix the issue using mb_convert_encoding function as below. Hopefully this fix helps Mahara multibyte character users.

---------------------------

Program file to modify:
artefact/comment/lib.php

Line number to modify;
1184

[ Before ]
    /*
     * Removes the classes from the text of the comment that could interfere
     * with the comment display
     * @param string $comment the text content of the comment
     */
    public static function remove_comments_classes($comment) {

        if (empty($comment)) {
            return "";
        }
        $dom = new DOMDocument();
        $dom->preserveWhiteSpace = false;
        $dom->formatOutput = true;
        $dom->loadHTML($comment, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
        $xpath = new DOMXPath($dom);

[ After ]
    /*
     * Removes the classes from the text of the comment that could interfere
     * with the comment display
     * @param string $comment the text content of the comment
     */
    public static function remove_comments_classes($comment) {

        if (empty($comment)) {
            return "";
        }
        $dom = new DOMDocument();
        $dom->preserveWhiteSpace = false;
        $dom->formatOutput = true;
// $dom->loadHTML($comment, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
        if (function_exists('mb_convert_encoding')) {
            $dom->loadHTML(mb_convert_encoding($comment, 'HTML-ENTITIES', 'UTF-8'));
        } else
            $dom->loadHTML($comment, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
        }
        $xpath = new DOMXPath($dom);