chamilo / chamilo-lms

                        //initialise answer tags

                        $user_tags = $correct_tags = $real_text = array();

                        // the loop will stop at the end of the text

                        while (1) {

                            // quits the loop if there are no more blanks (detect '[')

                            if (($pos = api_strpos($temp, '[')) === false) {

                                // adds the end of the text

                                $answer = $temp;

                                $real_text[] = $answer;

                                break; //no more "blanks", quit the loop

                            }

                            // adds the piece of text that is before the blank

                            //and ends with '[' into a general storage array

                            $real_text[] = api_substr($temp, 0, $pos +1);

                            $answer .= api_substr($temp, 0, $pos +1);

                            //take the string remaining (after the last "[" we found)

                            $temp = api_substr($temp, $pos +1);

                            // quit the loop if there are no more blanks, and update $pos to the position of next ']'

                            if (($pos = api_strpos($temp, ']')) === false) {

                                // adds the end of the text

                                $answer .= $temp;

                                break;

                            }

                            if ($from_database) {

                                $queryfill = "SELECT answer FROM ".$TBL_TRACK_ATTEMPT."

                                          WHERE

                                            exe_id = '".$exeId."' AND

                                            question_id= ".intval($questionId)."";

                                $resfill = Database::query($queryfill);

                                $str = Database::result($resfill, 0, 'answer');

                                api_preg_match_all('#\[([^[]*)\]#', $str, $arr);

                                $str = str_replace('\r\n', '', $str);

                                $choice = $arr[1];

                                if (isset($choice[$j])) {

                                    $tmp = api_strrpos($choice[$j], ' / ');

                                    $choice[$j] = api_substr($choice[$j], 0, $tmp);

                                    $choice[$j] = trim($choice[$j]);

                                    // Needed to let characters ' and " to work as part of an answer

                                    $choice[$j] = stripslashes($choice[$j]);

                                } else {

                                    $choice[$j] = null;

                                }

                            } else {

                                // This value is the user input, not escaped while correct answer is escaped by fckeditor

                                $choice[$j] = api_htmlentities(trim($choice[$j]));

                            }

                            $user_tags[] = $choice[$j];

                            //put the contents of the [] answer tag into correct_tags[]

                            $correct_tags[] = api_substr($temp, 0, $pos);

                            $j++;

                            $temp = api_substr($temp, $pos +1);

                        }

                        $answer = '';

                        $real_correct_tags = $correct_tags;

                        $chosen_list = array();

                    //initialise answer tags

                    $userTags = $correctTags = $realText = array();

                    // the loop will stop at the end of the text

                    while (1) {

                        // quits the loop if there are no more blanks (detect '[')

                        if (($pos = api_strpos($temp, '[')) === false) {

                            // adds the end of the text

                            $answer = $temp;

                            $realText[] = $answer;

                            break; //no more "blanks", quit the loop

                        }

                        // adds the piece of text that is before the blank

                        //and ends with '[' into a general storage array

                        $realText[] = api_substr($temp, 0, $pos +1);

                        $answer .= api_substr($temp, 0, $pos +1);

                        //take the string remaining (after the last "[" we found)

                        $temp = api_substr($temp, $pos +1);

                        // quit the loop if there are no more blanks, and update $pos to the position of next ']'

                        if (($pos = api_strpos($temp, ']')) === false) {

                            // adds the end of the text

                            $answer .= $temp;

                            break;

                        }

                        if ($from_database) {

                            $queryfill = "SELECT answer FROM ".$TBL_TRACK_ATTEMPT."

                                          WHERE

                                            exe_id = '".$exeId."' AND

                                            question_id= ".intval($questionId)."";

                            $resfill = Database::query($queryfill);

                            $str = Database::result($resfill, 0, 'answer');

                            api_preg_match_all('#\[([^[]*)\]#', $str, $arr);

                            $str = str_replace('\r\n', '', $str);

                            $choice = $arr[1];

                            if (isset($choice[$j])) {

                                $tmp = api_strrpos($choice[$j], ' / ');

                                $choice[$j] = api_substr($choice[$j], 0, $tmp);

                                $choice[$j] = trim($choice[$j]);

                                // Needed to let characters ' and " to work as part of an answer

                                $choice[$j] = stripslashes($choice[$j]);

                            } else {

                                $choice[$j] = null;

                            }

                        } else {

                            // This value is the user input, not escaped while correct answer is escaped by fckeditor

                            $choice[$j] = api_htmlentities(trim($choice[$j]));

                        }

                        $userTags[] = $choice[$j];

                        //put the contents of the [] answer tag into correct_tags[]

                        $correctTags[] = api_substr($temp, 0, $pos);

                        $j++;

                        $temp = api_substr($temp, $pos +1);

                    }

                    $answer = '';

                    $realCorrectTags = $correctTags;

                    for ($i = 0; $i < count($realCorrectTags); $i++) {