$answer_disabled = intval(!F_getBoolean($ma['answer_enabled']));
         $answer_isright = intval(F_getBoolean($ma['answer_isright']));
         $pdf->Cell($data_cell_width_third, $data_cell_height, '', 0, 0, 'C', 0);
         $pdf->Cell($data_cell_width_third, $data_cell_height, $idx, 1, 0, 'C', $answer_disabled);
         if ($mq['question_type'] != 4) {
             $pdf->Cell($data_cell_width_third / 2, $data_cell_height, $qright[$answer_isright], 1, 0, 'C', $answer_disabled);
         } else {
             $pdf->Cell($data_cell_width_third / 2, $data_cell_height, '', 1, 0, 'C', $answer_disabled);
         }
         if ($ma['answer_position'] > 0) {
             $pdf->Cell($data_cell_width_third, $data_cell_height, $ma['answer_position'], 1, 0, 'C', $answer_disabled);
         } else {
             $pdf->Cell($data_cell_width_third, $data_cell_height, '', 1, 0, 'C', $answer_disabled);
         }
         if ($ma['answer_keyboard_key'] > 0) {
             $pdf->Cell($data_cell_width_third / 2, $data_cell_height, F_text_to_xml(chr($ma['answer_keyboard_key'])), 1, 0, 'C', $answer_disabled);
         } else {
             $pdf->Cell($data_cell_width_third / 2, $data_cell_height, '', 1, 0, 'C', $answer_disabled);
         }
         $pdf->Ln();
         $pdf->writeHTMLCell(0, $data_cell_height, PDF_MARGIN_LEFT + 2 * $data_cell_width_third, $pdf->GetY(), F_decode_tcecode($ma['answer_description']), 1, 1, '', '', '');
         if (K_ENABLE_ANSWER_EXPLANATION and !empty($ma['answer_explanation'])) {
             $pdf->Cell(2 * $data_cell_width_third, $data_cell_height, '', 0, 0, 'C', 0);
             $pdf->SetFont('', 'BIU');
             $pdf->Cell(0, $data_cell_height, $l['w_explanation'], 'LTR', 1, '', 0, '', 0);
             $pdf->SetFont('', '');
             $pdf->writeHTMLCell(0, $data_cell_height, PDF_MARGIN_LEFT + 2 * $data_cell_width_third, $pdf->GetY(), F_decode_tcecode($ma['answer_explanation']), 'LRB', 1, '', '');
         }
     }
 } else {
     F_display_db_error();
                            }
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<key>' . F_text_to_xml(chr($ma['answer_keyboard_key'])) . '</key>' . K_NEWLINE;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<description>' . F_text_to_xml($ma['answer_description']) . '</description>' . K_NEWLINE;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<explanation>' . F_text_to_xml($ma['answer_explanation']) . '</explanation>' . K_NEWLINE;
                            $idx++;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '</answer>' . K_NEWLINE;
                        }
                    } else {
                        F_display_db_error();
                    }
                }
                // end multiple answers
                $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '</answers>' . K_NEWLINE;
                // export teacher/supervisor comment to the question
                if (isset($mq['testlog_comment']) and !empty($mq['testlog_comment'])) {
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<qcomment>' . F_text_to_xml($mq['testlog_comment']) . '</qcomment>' . K_NEWLINE;
                }
                $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '</question>' . K_NEWLINE;
                $itemcount++;
            }
            // end questions
            $xml .= K_TAB . K_TAB . K_TAB . '</details>' . K_NEWLINE;
        } else {
            F_display_db_error();
        }
        $xml .= K_TAB . K_TAB . '</user>' . K_NEWLINE;
    }
} else {
    F_display_db_error();
}
// calculate statistics
/**
 * Get data array in XML format.
 * @param $data (array) Array of data (key => value).
 * @param $level (int) Indentation level.
 * @return string XML data
 */
function getDataXML($data, $level = 1)
{
    $xml = '';
    $tb = str_repeat("\t", $level);
    foreach ($data as $key => $value) {
        $xml .= $tb . '<' . $key . '>';
        if (is_array($value)) {
            $xml .= "\n" . getDataXML($value, $level + 1);
        } else {
            $xml .= F_text_to_xml($value);
        }
        $xml .= '</' . $key . '>' . "\n";
    }
    return $xml;
}
Beispiel #4
0
/**
 * Export user results in XML format.
 * @param $user_id (int) user ID - if greater than zero, filter stats for the specified user.
 * @param $startdate (string) start date ID - if greater than zero, filter stats for the specified starting date
 * @param $enddate (string) end date ID - if greater than zero, filter stats for the specified ending date
 * @param $order_field (string) Ordering fields for SQL query.
 * @author Nicola Asuni
 * @return XML data
 */
function F_xml_export_user_results($user_id, $startdate, $enddate, $order_field)
{
    global $l, $db;
    require_once '../config/tce_config.php';
    // define symbols for answers list
    $qtype = array('S', 'M', 'T', 'O');
    // question types
    $type = array('single', 'multiple', 'text', 'ordering');
    $boolean = array('false', 'true');
    $xml = '';
    // XML data to be returned
    $xml .= '<' . '?xml version="1.0" encoding="UTF-8" ?' . '>' . K_NEWLINE;
    $xml .= '<tcexamuserresults version="' . K_TCEXAM_VERSION . '">' . K_NEWLINE;
    $xml .= K_TAB . '<header';
    $xml .= ' lang="' . K_USER_LANG . '"';
    $xml .= ' date="' . date(K_TIMESTAMP_FORMAT) . '">' . K_NEWLINE;
    $xml .= K_TAB . K_TAB . '<user_id>' . $user_id . '</user_id>' . K_NEWLINE;
    $sql = 'SELECT user_name, user_lastname, user_firstname FROM ' . K_TABLE_USERS . ' WHERE user_id=' . $user_id . '';
    if ($r = F_db_query($sql, $db)) {
        if ($m = F_db_fetch_array($r)) {
            $xml .= K_TAB . K_TAB . '<user_name>' . $m['user_name'] . '</user_name>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . '<user_lastname>' . $m['user_lastname'] . '</user_lastname>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . '<user_firstname>' . $m['user_firstname'] . '</user_firstname>' . K_NEWLINE;
        }
    } else {
        F_display_db_error();
    }
    $xml .= K_TAB . K_TAB . '<date_from>' . $startdate . '</date_from>' . K_NEWLINE;
    $xml .= K_TAB . K_TAB . '<date_to>' . $enddate . '</date_to>' . K_NEWLINE;
    $xml .= K_TAB . '</header>' . K_NEWLINE;
    $xml .= K_TAB . '<body>' . K_NEWLINE;
    $statsdata = array();
    $statsdata['score'] = array();
    $statsdata['right'] = array();
    $statsdata['wrong'] = array();
    $statsdata['unanswered'] = array();
    $statsdata['undisplayed'] = array();
    $statsdata['unrated'] = array();
    $sql = 'SELECT
			testuser_id,
			test_id,
			test_name,
			testuser_creation_time,
			testuser_status,
			SUM(testlog_score) AS total_score,
			MAX(testlog_change_time) AS testuser_end_time
		FROM ' . K_TABLE_TESTS_LOGS . ', ' . K_TABLE_TEST_USER . ', ' . K_TABLE_TESTS . '
		WHERE testuser_status>0
			AND testuser_creation_time>=\'' . F_escape_sql($db, $startdate) . '\'
			AND testuser_creation_time<=\'' . F_escape_sql($db, $enddate) . '\'
			AND testuser_user_id=' . $user_id . '
			AND testlog_testuser_id=testuser_id
			AND testuser_test_id=test_id';
    if ($_SESSION['session_user_level'] < K_AUTH_ADMINISTRATOR) {
        $sql .= ' AND test_user_id IN (' . F_getAuthorizedUsers($_SESSION['session_user_id']) . ')';
    }
    $sql .= ' GROUP BY testuser_id, test_id, test_name, testuser_creation_time, testuser_status ORDER BY ' . F_escape_sql($db, $order_field) . '';
    if ($r = F_db_query($sql, $db)) {
        $passed = 0;
        while ($m = F_db_fetch_array($r)) {
            $testuser_id = $m['testuser_id'];
            $usrtestdata = F_getUserTestStat($m['test_id'], $user_id);
            $halfscore = $usrtestdata['max_score'] / 2;
            $xml .= K_TAB . K_TAB . '<test id=\'' . $m['test_id'] . '\'>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<start_time>' . $m['testuser_creation_time'] . '</start_time>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<end_time>' . $m['testuser_end_time'] . '</end_time>' . K_NEWLINE;
            $time_diff = strtotime($m['testuser_end_time']) - strtotime($m['testuser_creation_time']);
            //sec
            $time_diff = gmdate('H:i:s', $time_diff);
            $xml .= K_TAB . K_TAB . K_TAB . '<time>' . $time_diff . '</time>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<name>' . F_text_to_xml($m['test_name']) . '</name>' . K_NEWLINE;
            if ($usrtestdata['score_threshold'] > 0) {
                if ($usrtestdata['score'] >= $usrtestdata['score_threshold']) {
                    $xml .= K_TAB . K_TAB . K_TAB . '<passed>true</passed>' . K_NEWLINE;
                    $passed++;
                } else {
                    $xml .= K_TAB . K_TAB . K_TAB . '<passed>false</passed>' . K_NEWLINE;
                }
            } elseif ($usrtestdata['score'] > $halfscore) {
                $passed++;
            }
            $xml .= K_TAB . K_TAB . K_TAB . '<score>' . round($m['total_score'], 3) . '</score>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<score_percent>' . round(100 * $usrtestdata['score'] / $usrtestdata['max_score']) . '</score_percent>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<right>' . $usrtestdata['right'] . '</right>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<right_percent>' . round(100 * $usrtestdata['right'] / $usrtestdata['all']) . '</right_percent>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<wrong>' . $usrtestdata['wrong'] . '</wrong>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<wrong_percent>' . round(100 * $usrtestdata['wrong'] / $usrtestdata['all']) . '</wrong_percent>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<unanswered>' . $usrtestdata['unanswered'] . '</unanswered>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<unanswered_percent>' . round(100 * $usrtestdata['unanswered'] / $usrtestdata['all']) . '</unanswered_percent>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<undisplayed>' . $usrtestdata['undisplayed'] . '</undisplayed>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<undisplayed_percent>' . round(100 * $usrtestdata['undisplayed'] / $usrtestdata['all']) . '</undisplayed_percent>' . K_NEWLINE;
            if ($m['testuser_status'] == 4) {
                $status = $l['w_locked'];
            } else {
                $status = $l['w_unlocked'];
            }
            $xml .= K_TAB . K_TAB . K_TAB . '<status>' . $status . '</status>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<comment>' . F_text_to_xml($usrtestdata['comment']) . '</comment>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . '</test>' . K_NEWLINE;
            // collects data for descriptive statistics
            $statsdata['score'][] = $m['total_score'] / $usrtestdata['max_score'];
            $statsdata['right'][] = $usrtestdata['right'] / $usrtestdata['all'];
            $statsdata['wrong'][] = $usrtestdata['wrong'] / $usrtestdata['all'];
            $statsdata['unanswered'][] = $usrtestdata['unanswered'] / $usrtestdata['all'];
            $statsdata['undisplayed'][] = $usrtestdata['undisplayed'] / $usrtestdata['all'];
            $statsdata['unrated'][] = $usrtestdata['unrated'] / $usrtestdata['all'];
        }
    } else {
        F_display_db_error();
    }
    // calculate statistics
    $stats = F_getArrayStatistics($statsdata);
    $excludestat = array('sum', 'variance');
    $calcpercent = array('mean', 'median', 'mode', 'minimum', 'maximum', 'range', 'standard_deviation');
    $xml .= K_TAB . K_TAB . '<teststatistics>' . K_NEWLINE;
    $xml .= K_TAB . K_TAB . K_TAB . '<passed>' . $passed . '</passed>' . K_NEWLINE;
    $passed_perc = 0;
    if ($itemcount > 0) {
        $passed_perc = $passed / $stats['number']['score'];
    }
    $xml .= K_TAB . K_TAB . K_TAB . '<passed_percent>' . round(100 * $passed_perc) . '</passed_percent>' . K_NEWLINE;
    foreach ($stats as $row => $columns) {
        if (!in_array($row, $excludestat)) {
            $xml .= K_TAB . K_TAB . K_TAB . '<' . $row . '>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<score>' . round($columns['score'], 3) . '</score>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<right>' . round($columns['right'], 3) . '</right>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<wrong>' . round($columns['wrong'], 3) . '</wrong>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<unanswered>' . round($columns['unanswered'], 3) . '</unanswered>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<undisplayed>' . round($columns['undisplayed'], 3) . '</undisplayed>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<unrated>' . round($columns['unrated'], 3) . '</unrated>' . K_NEWLINE;
            if (in_array($row, $calcpercent)) {
                $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<score_percent>' . round(100 * ($columns['score'] / $usrtestdata['max_score'])) . '</score_percent>' . K_NEWLINE;
                $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<right_percent>' . round(100 * ($columns['right'] / $usrtestdata['all'])) . '</right_percent>' . K_NEWLINE;
                $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<wrong_percent>' . round(100 * ($columns['wrong'] / $usrtestdata['all'])) . '</wrong_percent>' . K_NEWLINE;
                $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<unanswered_percent>' . round(100 * ($columns['unanswered'] / $usrtestdata['all'])) . '</unanswered_percent>' . K_NEWLINE;
                $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<undisplayed_percent>' . round(100 * ($columns['undisplayed'] / $usrtestdata['all'])) . '</undisplayed_percent>' . K_NEWLINE;
                $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<unrated_percent>' . round(100 * ($columns['unrated'] / $usrtestdata['all'])) . '</unrated_percent>' . K_NEWLINE;
            }
            $xml .= K_TAB . K_TAB . K_TAB . '</' . $row . '>' . K_NEWLINE;
        }
    }
    $xml .= K_TAB . K_TAB . '</teststatistics>' . K_NEWLINE;
    $xml .= K_TAB . '</body>' . K_NEWLINE;
    $xml .= '</tcexamuserresults>' . K_NEWLINE;
    return $xml;
}
Beispiel #5
0
/**
 * Export all users to XML grouped by users' groups.
 * @author Nicola Asuni
 * @since 2006-03-17
 * @return XML data
 */
function F_xml_export_users()
{
    global $l, $db;
    require_once '../config/tce_config.php';
    $boolean = array('false', 'true');
    $xml = '';
    // XML data to be returned
    $xml .= '<' . '?xml version="1.0" encoding="UTF-8" ?' . '>' . K_NEWLINE;
    $xml .= '<tcexamusers version="' . K_TCEXAM_VERSION . '">' . K_NEWLINE;
    $xml .= K_TAB . '<header';
    $xml .= ' lang="' . K_USER_LANG . '"';
    $xml .= ' date="' . date(K_TIMESTAMP_FORMAT) . '">' . K_NEWLINE;
    $xml .= K_TAB . '</header>' . K_NEWLINE;
    $xml .= K_TAB . '<body>' . K_NEWLINE;
    // select users
    $sqla = 'SELECT * FROM ' . K_TABLE_USERS . ' WHERE (user_id>1)';
    if ($_SESSION['session_user_level'] < K_AUTH_ADMINISTRATOR) {
        // filter for level
        $sqla .= ' AND ((user_level<' . $_SESSION['session_user_level'] . ') OR (user_id=' . $_SESSION['session_user_id'] . '))';
        // filter for groups
        $sqla .= ' AND user_id IN (SELECT tb.usrgrp_user_id
			FROM ' . K_TABLE_USERGROUP . ' AS ta, ' . K_TABLE_USERGROUP . ' AS tb
			WHERE ta.usrgrp_group_id=tb.usrgrp_group_id
				AND ta.usrgrp_user_id=' . intval($_SESSION['session_user_id']) . '
				AND tb.usrgrp_user_id=user_id)';
    }
    $sqla .= ' ORDER BY user_lastname,user_firstname,user_name';
    if ($ra = F_db_query($sqla, $db)) {
        while ($ma = F_db_fetch_array($ra)) {
            $xml .= K_TAB . K_TAB . K_TAB . '<user id="' . $ma['user_id'] . '">' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<name>';
            $xml .= F_text_to_xml($ma['user_name']);
            $xml .= '</name>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<password>';
            // password cannot be exported because is encrypted
            //$xml .= $ma['user_password'];
            $xml .= '</password>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<email>';
            $xml .= $ma['user_email'];
            $xml .= '</email>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<regdate>';
            $xml .= $ma['user_regdate'];
            $xml .= '</regdate>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<ip>';
            $xml .= $ma['user_ip'];
            $xml .= '</ip>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<firstname>';
            $xml .= F_text_to_xml($ma['user_firstname']);
            $xml .= '</firstname>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<lastname>';
            $xml .= F_text_to_xml($ma['user_lastname']);
            $xml .= '</lastname>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<birthdate>';
            $xml .= substr($ma['user_birthdate'], 0, 10);
            $xml .= '</birthdate>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<birthplace>';
            $xml .= F_text_to_xml($ma['user_birthplace']);
            $xml .= '</birthplace>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<regnumber>';
            $xml .= F_text_to_xml($ma['user_regnumber']);
            $xml .= '</regnumber>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<ssn>';
            $xml .= F_text_to_xml($ma['user_ssn']);
            $xml .= '</ssn>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<level>';
            $xml .= $ma['user_level'];
            $xml .= '</level>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<verifycode>';
            $xml .= $ma['user_verifycode'];
            $xml .= '</verifycode>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<otpkey>';
            $xml .= $ma['user_otpkey'];
            $xml .= '</otpkey>' . K_NEWLINE;
            // add user's groups
            $sqlg = 'SELECT *
				FROM ' . K_TABLE_GROUPS . ', ' . K_TABLE_USERGROUP . '
				WHERE usrgrp_group_id=group_id
					AND usrgrp_user_id=' . $ma['user_id'] . '
				ORDER BY group_name';
            if ($rg = F_db_query($sqlg, $db)) {
                while ($mg = F_db_fetch_array($rg)) {
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<group id="' . $mg['group_id'] . '">';
                    $xml .= $mg['group_name'];
                    $xml .= '</group>' . K_NEWLINE;
                }
            } else {
                F_display_db_error();
            }
            $xml .= K_TAB . K_TAB . K_TAB . '</user>' . K_NEWLINE;
        }
    } else {
        F_display_db_error();
    }
    $xml .= K_TAB . '</body>' . K_NEWLINE;
    $xml .= '</tcexamusers>' . K_NEWLINE;
    return $xml;
}
/**
 * Get data array in XML format.
 * @param $data (array) Array of data (key => value).
 * @param $level (int) Indentation level.
 * @return string XML data
 */
function getDataXML($data, $level = 1)
{
    $xml = '';
    $tb = str_repeat("\t", $level);
    foreach ($data as $key => $value) {
        $key = strtolower($key);
        $key = preg_replace('/[^a-z0-9]+/', '_', $key);
        if (is_numeric($key[0]) or $key[0] == '_') {
            $key = 'item' . $key;
        }
        $xml .= $tb . '<' . $key . '>';
        if (is_array($value)) {
            $xml .= "\n" . getDataXML($value, $level + 1);
        } else {
            $xml .= F_text_to_xml($value);
        }
        $xml .= '</' . $key . '>' . "\n";
    }
    return $xml;
}
/**
 * Export all question statistics of the selected test to XML.
 * @author Nicola Asuni
 * @since 2010-05-10
 * @param $test_id (int) test ID
 * @return XML data
 */
function F_xml_export_question_stats($test_id)
{
    global $l, $db;
    require_once '../config/tce_config.php';
    require_once '../../shared/code/tce_authorization.php';
    require_once '../code/tce_functions_auth_sql.php';
    $boolean = array('false', 'true');
    $type = array('single', 'multiple', 'text', 'ordering');
    $xml = '';
    // XML data to be returned
    $xml .= '<' . '?xml version="1.0" encoding="UTF-8" ?' . '>' . K_NEWLINE;
    $xml .= '<tcexamquestionstats version="' . K_TCEXAM_VERSION . '">' . K_NEWLINE;
    $xml .= K_TAB . '<header';
    $xml .= ' lang="' . K_USER_LANG . '"';
    $xml .= ' date="' . date(K_TIMESTAMP_FORMAT) . '">' . K_NEWLINE;
    $xml .= K_TAB . '</header>' . K_NEWLINE;
    $xml .= K_TAB . '<body>' . K_NEWLINE;
    // get test data
    $testdata = F_getTestData($test_id);
    // get total number of questions for the selected test
    $num_questions = F_count_rows(K_TABLE_TESTS_LOGS . ', ' . K_TABLE_TEST_USER, 'WHERE testlog_testuser_id=testuser_id AND testuser_test_id=' . $test_id . '');
    // output questions stats
    $sqlr = 'SELECT
			question_id,
			COUNT(question_id) AS recurrence,
			AVG(testlog_score) AS average_score,
			AVG(testlog_change_time - testlog_display_time) AS average_time,
			min(question_difficulty) AS question_difficulty
		FROM ' . K_TABLE_TESTS_LOGS . ', ' . K_TABLE_TEST_USER . ', ' . K_TABLE_QUESTIONS . '
		WHERE testlog_testuser_id=testuser_id
			AND testlog_question_id=question_id
			AND testuser_test_id=' . $test_id . '
		GROUP BY question_id
		ORDER BY recurrence DESC,average_score DESC';
    if ($rr = F_db_query($sqlr, $db)) {
        while ($mr = F_db_fetch_array($rr)) {
            $xml .= K_TAB . K_TAB . '<question>' . K_NEWLINE;
            // get the question max score
            $question_max_score = $testdata['test_score_right'] * $mr['question_difficulty'];
            $qsttestdata = F_getQuestionTestStat($test_id, $mr['question_id']);
            $xml .= K_TAB . K_TAB . K_TAB . '<id>' . $mr['question_id'] . '</id>' . K_NEWLINE;
            $question_description = '';
            $sqlrq = 'SELECT question_description FROM ' . K_TABLE_QUESTIONS . ' WHERE question_id=' . $mr['question_id'] . '';
            if ($rrq = F_db_query($sqlrq, $db)) {
                if ($mrq = F_db_fetch_array($rrq)) {
                    $question_description = $mrq['question_description'];
                }
            } else {
                F_display_db_error();
            }
            $xml .= K_TAB . K_TAB . K_TAB . '<description>' . F_text_to_xml($question_description) . '</description>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<recurrence>' . $mr['recurrence'] . '</recurrence>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<recurrence_percent>' . F_formatXMLPercentage($mr['recurrence'] / $num_questions) . '</recurrence_percent>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<points>' . number_format($mr['average_score'], 3, '.', '') . '</points>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<points_percent>' . F_formatXMLPercentage($mr['average_score'] / $question_max_score) . '</points_percent>' . K_NEWLINE;
            if (stripos($mr['average_time'], ':') !== FALSE) {
                // PostgreSQL returns formatted time, while MySQL returns the number of seconds
                $mr['average_time'] = strtotime($mr['average_time']);
            }
            $xml .= K_TAB . K_TAB . K_TAB . '<time>' . date('i:s', $mr['average_time']) . '</time>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<correct>' . $qsttestdata['right'] . '</correct>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<correct_percent>' . F_formatXMLPercentage($qsttestdata['right'] / $qsttestdata['num']) . '</correct_percent>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<wrong>' . $qsttestdata['wrong'] . '</wrong>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<wrong_percent>' . F_formatXMLPercentage($qsttestdata['wrong'] / $qsttestdata['num']) . '</wrong_percent>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<unanswered>' . $qsttestdata['unanswered'] . '</unanswered>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<unanswered_percent>' . F_formatXMLPercentage($qsttestdata['unanswered'] / $qsttestdata['num']) . '</unanswered_percent>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<undisplayed>' . $qsttestdata['undisplayed'] . '</undisplayed>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<undisplayed_percent>' . F_formatXMLPercentage($qsttestdata['undisplayed'] / $qsttestdata['num']) . '</undisplayed_percent>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<unrated>' . $qsttestdata['unrated'] . '</unrated>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<unrated_percent>' . F_formatXMLPercentage($qsttestdata['unrated'] / $qsttestdata['num']) . '</unrated_percent>' . K_NEWLINE;
            // answers statistics
            $sqla = 'SELECT *
				FROM ' . K_TABLE_ANSWERS . '
				WHERE answer_question_id=' . $mr['question_id'] . '
				ORDER BY answer_id';
            if ($ra = F_db_query($sqla, $db)) {
                while ($ma = F_db_fetch_array($ra)) {
                    $xml .= K_TAB . K_TAB . K_TAB . '<answer>' . K_NEWLINE;
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<id>' . $ma['answer_id'] . '</id>' . K_NEWLINE;
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<description>' . F_text_to_xml($ma['answer_description']) . '</description>' . K_NEWLINE;
                    $num_all_answers = F_count_rows(K_TABLE_TEST_USER . ', ' . K_TABLE_TESTS_LOGS . ', ' . K_TABLE_ANSWERS . ', ' . K_TABLE_LOG_ANSWER . ' WHERE logansw_answer_id=answer_id AND logansw_testlog_id=testlog_id AND testlog_testuser_id=testuser_id AND testuser_test_id=' . $test_id . ' AND testlog_question_id=' . $mr['question_id'] . '');
                    $num_answers = F_count_rows(K_TABLE_TEST_USER . ', ' . K_TABLE_TESTS_LOGS . ', ' . K_TABLE_ANSWERS . ', ' . K_TABLE_LOG_ANSWER . ' WHERE answer_id=' . $ma['answer_id'] . ' AND logansw_answer_id=answer_id AND logansw_testlog_id=testlog_id AND testlog_testuser_id=testuser_id AND testuser_test_id=' . $test_id . ' AND testlog_question_id=' . $mr['question_id'] . '');
                    $right_answers = F_count_rows(K_TABLE_TEST_USER . ', ' . K_TABLE_TESTS_LOGS . ', ' . K_TABLE_ANSWERS . ', ' . K_TABLE_LOG_ANSWER . ' WHERE answer_id=' . $ma['answer_id'] . ' AND logansw_answer_id=answer_id AND logansw_testlog_id=testlog_id AND testlog_testuser_id=testuser_id AND testuser_test_id=' . $test_id . ' AND testlog_question_id=' . $mr['question_id'] . ' AND ((answer_isright=\'0\' AND logansw_selected=0) OR (answer_isright=\'1\' AND logansw_selected=1) OR (answer_position IS NOT NULL AND logansw_position IS NOT NULL AND answer_position=logansw_position))');
                    $wrong_answers = F_count_rows(K_TABLE_TEST_USER . ', ' . K_TABLE_TESTS_LOGS . ', ' . K_TABLE_ANSWERS . ', ' . K_TABLE_LOG_ANSWER . ' WHERE answer_id=' . $ma['answer_id'] . ' AND logansw_answer_id=answer_id AND logansw_testlog_id=testlog_id AND testlog_testuser_id=testuser_id AND testuser_test_id=' . $test_id . ' AND testlog_question_id=' . $mr['question_id'] . ' AND ((answer_isright=\'0\' AND logansw_selected=1) OR (answer_isright=\'1\' AND logansw_selected=0) OR (answer_position IS NOT NULL AND answer_position!=logansw_position))');
                    $unanswered = F_count_rows(K_TABLE_TEST_USER . ', ' . K_TABLE_TESTS_LOGS . ', ' . K_TABLE_ANSWERS . ', ' . K_TABLE_LOG_ANSWER . ' WHERE answer_id=' . $ma['answer_id'] . ' AND logansw_answer_id=answer_id AND logansw_testlog_id=testlog_id AND testlog_testuser_id=testuser_id AND testuser_test_id=' . $test_id . ' AND testlog_question_id=' . $mr['question_id'] . ' AND logansw_selected=-1');
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<recurrence>' . $num_answers . '</recurrence>' . K_NEWLINE;
                    $perc = 0;
                    if ($num_all_answers > 0) {
                        $perc = $num_answers / $num_all_answers;
                    }
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<recurrence_percent>' . F_formatXMLPercentage($perc) . '</recurrence_percent>' . K_NEWLINE;
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<correct>' . $right_answers . '</correct>' . K_NEWLINE;
                    $perc = 0;
                    if ($num_answers > 0) {
                        $perc = $right_answers / $num_answers;
                    }
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<correct_percent>' . F_formatXMLPercentage($perc) . '</correct_percent>' . K_NEWLINE;
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<wrong>' . $wrong_answers . '</wrong>' . K_NEWLINE;
                    $perc = 0;
                    if ($num_answers > 0) {
                        $perc = round($wrong_answers / $num_answers);
                    }
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<wrong_percent>' . F_formatXMLPercentage($perc) . '</wrong_percent>' . K_NEWLINE;
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<unanswered>' . $unanswered . '</unanswered>' . K_NEWLINE;
                    $perc = 0;
                    if ($num_answers > 0) {
                        $perc = round($unanswered / $num_answers);
                    }
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<unanswered_percent>' . F_formatXMLPercentage($perc) . '</unanswered_percent>' . K_NEWLINE;
                    $xml .= K_TAB . K_TAB . K_TAB . '</answer>' . K_NEWLINE;
                }
            } else {
                F_display_db_error();
            }
            $xml .= K_TAB . K_TAB . '</question>' . K_NEWLINE;
        }
    } else {
        F_display_db_error();
    }
    $xml .= K_TAB . '</body>' . K_NEWLINE;
    $xml .= '</tcexamquestionstats>' . K_NEWLINE;
    return $xml;
}
        $xml .= K_TAB . K_TAB . K_TAB . '<score_percent>' . round(100 * $usrtestdata['score'] / $usrtestdata['max_score']) . '</score_percent>' . K_NEWLINE;
        $xml .= K_TAB . K_TAB . K_TAB . '<right>' . $usrtestdata['right'] . '</right>' . K_NEWLINE;
        $xml .= K_TAB . K_TAB . K_TAB . '<right_percent>' . round(100 * $usrtestdata['right'] / $usrtestdata['all']) . '</right_percent>' . K_NEWLINE;
        $xml .= K_TAB . K_TAB . K_TAB . '<wrong>' . $usrtestdata['wrong'] . '</wrong>' . K_NEWLINE;
        $xml .= K_TAB . K_TAB . K_TAB . '<wrong_percent>' . round(100 * $usrtestdata['wrong'] / $usrtestdata['all']) . '</wrong_percent>' . K_NEWLINE;
        $xml .= K_TAB . K_TAB . K_TAB . '<unanswered>' . $usrtestdata['unanswered'] . '</unanswered>' . K_NEWLINE;
        $xml .= K_TAB . K_TAB . K_TAB . '<unanswered_percent>' . round(100 * $usrtestdata['unanswered'] / $usrtestdata['all']) . '</unanswered_percent>' . K_NEWLINE;
        $xml .= K_TAB . K_TAB . K_TAB . '<undisplayed>' . $usrtestdata['undisplayed'] . '</undisplayed>' . K_NEWLINE;
        $xml .= K_TAB . K_TAB . K_TAB . '<undisplayed_percent>' . round(100 * $usrtestdata['undisplayed'] / $usrtestdata['all']) . '</undisplayed_percent>' . K_NEWLINE;
        if ($m['testuser_status'] == 4) {
            $status = $l['w_locked'];
        } else {
            $status = $l['w_unlocked'];
        }
        $xml .= K_TAB . K_TAB . K_TAB . '<status>' . $status . '</status>' . K_NEWLINE;
        $xml .= K_TAB . K_TAB . K_TAB . '<comment>' . F_text_to_xml($usrtestdata['comment']) . '</comment>' . K_NEWLINE;
        $xml .= K_TAB . K_TAB . '</test>' . K_NEWLINE;
        // collects data for descriptive statistics
        $statsdata['score'][] = $m['total_score'] / $usrtestdata['max_score'];
        $statsdata['right'][] = $usrtestdata['right'] / $usrtestdata['all'];
        $statsdata['wrong'][] = $usrtestdata['wrong'] / $usrtestdata['all'];
        $statsdata['unanswered'][] = $usrtestdata['unanswered'] / $usrtestdata['all'];
        $statsdata['undisplayed'][] = $usrtestdata['undisplayed'] / $usrtestdata['all'];
        $statsdata['unrated'][] = $usrtestdata['unrated'] / $usrtestdata['all'];
    }
} else {
    F_display_db_error();
}
// calculate statistics
$stats = F_getArrayStatistics($statsdata);
$excludestat = array('sum', 'variance');
Beispiel #9
0
/**
 * Export all questions of the selected subject to XML.
 * @author Nicola Asuni
 * @since 2006-03-06
 * @param $module_id (int)  module ID
 * @param $subject_id (int) topic ID
 * @param $expmode (int) export mode: 1 = selected topic; 2 = selected module; 3 = all modules.
 * @return XML data
 */
function F_xml_export_questions($module_id, $subject_id, $expmode)
{
    global $l, $db;
    require_once '../config/tce_config.php';
    require_once '../../shared/code/tce_authorization.php';
    require_once '../../shared/code/tce_functions_auth_sql.php';
    $module_id = intval($module_id);
    $subject_id = intval($subject_id);
    $expmode = intval($expmode);
    $boolean = array('false', 'true');
    $type = array('single', 'multiple', 'text', 'ordering');
    $xml = '';
    // XML data to be returned
    $xml .= '<' . '?xml version="1.0" encoding="UTF-8" ?' . '>' . K_NEWLINE;
    $xml .= '<tcexamquestions version="' . K_TCEXAM_VERSION . '">' . K_NEWLINE;
    $xml .= K_TAB . '<header';
    $xml .= ' lang="' . K_USER_LANG . '"';
    $xml .= ' date="' . date(K_TIMESTAMP_FORMAT) . '">' . K_NEWLINE;
    $xml .= K_TAB . '</header>' . K_NEWLINE;
    $xml .= K_TAB . '<body>' . K_NEWLINE;
    // ---- module
    $andmodwhere = '';
    if ($expmode < 3) {
        $andmodwhere = 'module_id=' . $module_id . '';
    }
    $sqlm = F_select_modules_sql($andmodwhere);
    if ($rm = F_db_query($sqlm, $db)) {
        while ($mm = F_db_fetch_array($rm)) {
            $xml .= K_TAB . K_TAB . '<module>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<name>';
            $xml .= F_text_to_xml($mm['module_name']);
            $xml .= '</name>' . K_NEWLINE;
            $xml .= K_TAB . K_TAB . K_TAB . '<enabled>';
            $xml .= $boolean[intval(F_getBoolean($mm['module_enabled']))];
            $xml .= '</enabled>' . K_NEWLINE;
            // ---- topic
            $where_sqls = 'subject_module_id=' . $mm['module_id'] . '';
            if ($expmode < 2) {
                $where_sqls .= ' AND subject_id=' . $subject_id . '';
            }
            $sqls = F_select_subjects_sql($where_sqls);
            if ($rs = F_db_query($sqls, $db)) {
                while ($ms = F_db_fetch_array($rs)) {
                    $xml .= K_TAB . K_TAB . K_TAB . '<subject>' . K_NEWLINE;
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<name>';
                    $xml .= F_text_to_xml($ms['subject_name']);
                    $xml .= '</name>' . K_NEWLINE;
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<description>';
                    $xml .= F_text_to_xml($ms['subject_description']);
                    $xml .= '</description>' . K_NEWLINE;
                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<enabled>';
                    $xml .= $boolean[intval(F_getBoolean($ms['subject_enabled']))];
                    $xml .= '</enabled>' . K_NEWLINE;
                    // ---- questions
                    $sql = 'SELECT *
						FROM ' . K_TABLE_QUESTIONS . '
						WHERE question_subject_id=' . $ms['subject_id'] . '
						ORDER BY question_enabled DESC, question_position, question_description';
                    if ($r = F_db_query($sql, $db)) {
                        while ($m = F_db_fetch_array($r)) {
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<question>' . K_NEWLINE;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<enabled>';
                            $xml .= $boolean[intval(F_getBoolean($m['question_enabled']))];
                            $xml .= '</enabled>' . K_NEWLINE;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<type>';
                            $xml .= $type[$m['question_type'] - 1];
                            $xml .= '</type>' . K_NEWLINE;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<difficulty>';
                            $xml .= $m['question_difficulty'];
                            $xml .= '</difficulty>' . K_NEWLINE;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<position>';
                            $xml .= $m['question_position'];
                            $xml .= '</position>' . K_NEWLINE;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<timer>';
                            $xml .= $m['question_timer'];
                            $xml .= '</timer>' . K_NEWLINE;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<fullscreen>';
                            $xml .= $boolean[intval(F_getBoolean($m['question_fullscreen']))];
                            $xml .= '</fullscreen>' . K_NEWLINE;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<inline_answers>';
                            $xml .= $boolean[intval(F_getBoolean($m['question_inline_answers']))];
                            $xml .= '</inline_answers>' . K_NEWLINE;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<auto_next>';
                            $xml .= $boolean[intval(F_getBoolean($m['question_auto_next']))];
                            $xml .= '</auto_next>' . K_NEWLINE;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<description>';
                            $xml .= F_text_to_xml($m['question_description']);
                            $xml .= '</description>' . K_NEWLINE;
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<explanation>';
                            $xml .= F_text_to_xml($m['question_explanation']);
                            $xml .= '</explanation>' . K_NEWLINE;
                            // display alternative answers
                            $sqla = 'SELECT *
								FROM ' . K_TABLE_ANSWERS . '
								WHERE answer_question_id=\'' . $m['question_id'] . '\'
								ORDER BY answer_position,answer_isright DESC';
                            if ($ra = F_db_query($sqla, $db)) {
                                while ($ma = F_db_fetch_array($ra)) {
                                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<answer>' . K_NEWLINE;
                                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<enabled>';
                                    $xml .= $boolean[intval(F_getBoolean($ma['answer_enabled']))];
                                    $xml .= '</enabled>' . K_NEWLINE;
                                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<isright>';
                                    $xml .= $boolean[intval(F_getBoolean($ma['answer_isright']))];
                                    $xml .= '</isright>' . K_NEWLINE;
                                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<position>';
                                    $xml .= $ma['answer_position'];
                                    $xml .= '</position>' . K_NEWLINE;
                                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<keyboard_key>';
                                    $xml .= $ma['answer_keyboard_key'];
                                    $xml .= '</keyboard_key>' . K_NEWLINE;
                                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<description>';
                                    $xml .= F_text_to_xml($ma['answer_description']);
                                    $xml .= '</description>' . K_NEWLINE;
                                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '<explanation>';
                                    $xml .= F_text_to_xml($ma['answer_explanation']);
                                    $xml .= '</explanation>' . K_NEWLINE;
                                    $xml .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . '</answer>' . K_NEWLINE;
                                }
                            } else {
                                F_display_db_error();
                            }
                            $xml .= K_TAB . K_TAB . K_TAB . K_TAB . '</question>' . K_NEWLINE;
                        }
                        // end while for questions
                    } else {
                        F_display_db_error();
                    }
                    $xml .= K_TAB . K_TAB . K_TAB . '</subject>' . K_NEWLINE;
                }
                // end while for topics
            } else {
                F_display_db_error();
            }
            $xml .= K_TAB . K_TAB . '</module>' . K_NEWLINE;
        }
        // end while for module
    } else {
        F_display_db_error();
    }
    $xml .= K_TAB . '</body>' . K_NEWLINE;
    $xml .= '</tcexamquestions>' . K_NEWLINE;
    return $xml;
}
/**
 * Display a list of selected questions.
 * @author Nicola Asuni
 * @since 2005-07-06
 * @param $wherequery (string) question selection query
 * @param $subject_module_id (string) module ID
 * @param $subject_id (string) topic ID
 * @param $order_field (string) order by column name
 * @param $orderdir (int) oreder direction
 * @param $firstrow (int) number of first row to display
 * @param $rowsperpage (int) number of rows per page
 * @param $hide_answers (boolean) if true hide answers
 * @return false in case of empty database, true otherwise
 */
function F_show_select_questions($wherequery, $subject_module_id, $subject_id, $order_field, $orderdir, $firstrow, $rowsperpage, $hide_answers = false)
{
    global $l, $db;
    require_once '../config/tce_config.php';
    require_once '../../shared/code/tce_functions_page.php';
    $subject_module_id = intval($subject_module_id);
    $subject_id = intval($subject_id);
    $orderdir = intval($orderdir);
    $firstrow = intval($firstrow);
    $rowsperpage = intval($rowsperpage);
    if (empty($order_field) or !in_array($order_field, array('question_id', 'question_subject_id', 'question_description', 'question_explanation', 'question_type', 'question_difficulty', 'question_enabled', 'question_position', 'question_timer', 'question_fullscreen', 'question_inline_answers', 'question_auto_next', 'question_enabled DESC, question_position, CAST(question_description as varchar2(100))', 'question_enabled DESC, question_position, question_description'))) {
        $order_field = 'question_description';
    }
    if ($orderdir == 0) {
        $nextorderdir = 1;
        $full_order_field = $order_field;
    } else {
        $nextorderdir = 0;
        $full_order_field = $order_field . ' DESC';
    }
    if (!F_count_rows(K_TABLE_QUESTIONS)) {
        //if the table is void (no items) display message
        F_print_error('MESSAGE', $l['m_databasempty']);
        return FALSE;
    }
    if (empty($wherequery)) {
        $wherequery = 'WHERE question_subject_id=' . $subject_id . '';
    } else {
        $wherequery = F_escape_sql($db, $wherequery);
        $wherequery .= ' AND question_subject_id=' . $subject_id . '';
    }
    $sql = 'SELECT *
		FROM ' . K_TABLE_QUESTIONS . '
		' . $wherequery . '
		ORDER BY ' . $full_order_field;
    if (K_DATABASE_TYPE == 'ORACLE') {
        $sql = 'SELECT * FROM (' . $sql . ') WHERE rownum BETWEEN ' . $firstrow . ' AND ' . ($firstrow + $rowsperpage) . '';
    } else {
        $sql .= ' LIMIT ' . $rowsperpage . ' OFFSET ' . $firstrow . '';
    }
    if ($r = F_db_query($sql, $db)) {
        $questlist = '';
        $itemcount = $firstrow;
        while ($m = F_db_fetch_array($r)) {
            $itemcount++;
            $questlist .= '<li>' . K_NEWLINE;
            $questlist .= '<strong>' . $itemcount . '.</strong> ';
            $questlist .= '<input type="checkbox" name="questionid' . $itemcount . '" id="questionid' . $itemcount . '" value="' . $m['question_id'] . '" title="' . $l['w_select'] . '"';
            if (isset($_REQUEST['checkall']) and $_REQUEST['checkall'] == 1) {
                $questlist .= ' checked="checked"';
            }
            $questlist .= ' />';
            // display question description
            if (F_getBoolean($m['question_enabled'])) {
                $questlist .= '<acronym class="onbox" title="' . $l['w_enabled'] . '">+</acronym>';
            } else {
                $questlist .= '<acronym class="offbox" title="' . $l['w_disabled'] . '">-</acronym>';
            }
            switch ($m['question_type']) {
                case 1:
                    $questlist .= ' <acronym class="offbox" title="' . $l['w_single_answer'] . '">S</acronym>';
                    break;
                case 2:
                    $questlist .= ' <acronym class="offbox" title="' . $l['w_multiple_answers'] . '">M</acronym>';
                    break;
                case 3:
                    $questlist .= ' <acronym class="offbox" title="' . $l['w_free_answer'] . '">T</acronym>';
                    break;
                case 4:
                    $questlist .= ' <acronym class="offbox" title="' . $l['w_ordering_answer'] . '">O</acronym>';
                    break;
            }
            $questlist .= ' <acronym class="offbox" title="' . $l['h_question_difficulty'] . '">' . $m['question_difficulty'] . '</acronym>';
            if ($m['question_position'] > 0) {
                $questlist .= ' <acronym class="onbox" title="' . $l['h_position'] . '">' . intval($m['question_position']) . '</acronym>';
            } else {
                $questlist .= ' <acronym class="offbox" title="' . $l['h_position'] . '">&nbsp;</acronym>';
            }
            if (F_getBoolean($m['question_fullscreen'])) {
                $questlist .= ' <acronym class="onbox" title="' . $l['w_fullscreen'] . ': ' . $l['w_enabled'] . '">F</acronym>';
            } else {
                $questlist .= ' <acronym class="offbox" title="' . $l['w_fullscreen'] . ': ' . $l['w_disabled'] . '">&nbsp;</acronym>';
            }
            if (F_getBoolean($m['question_inline_answers'])) {
                $questlist .= ' <acronym class="onbox" title="' . $l['w_inline_answers'] . ': ' . $l['w_enabled'] . '">I</acronym>';
            } else {
                $questlist .= ' <acronym class="offbox" title="' . $l['w_inline_answers'] . ': ' . $l['w_disabled'] . '">&nbsp;</acronym>';
            }
            if (F_getBoolean($m['question_auto_next'])) {
                $questlist .= ' <acronym class="onbox" title="' . $l['w_auto_next'] . ': ' . $l['w_enabled'] . '">A</acronym>';
            } else {
                $questlist .= ' <acronym class="offbox" title="' . $l['w_auto_next'] . ': ' . $l['w_disabled'] . '">&nbsp;</acronym>';
            }
            if ($m['question_timer'] > 0) {
                $questlist .= ' <acronym class="onbox" title="' . $l['h_question_timer'] . '">' . intval($m['question_timer']) . '</acronym>';
            } else {
                $questlist .= ' <acronym class="offbox" title="' . $l['h_question_timer'] . '">&nbsp;</acronym>';
            }
            $questlist .= ' <a href="tce_edit_question.php?subject_module_id=' . $subject_module_id . '&amp;question_subject_id=' . $subject_id . '&amp;question_id=' . $m['question_id'] . '" title="' . $l['t_questions_editor'] . ' [ID = ' . $m['question_id'] . ']" class="xmlbutton">' . $l['w_edit'] . '</a>';
            $questlist .= '<br /><br />' . K_NEWLINE;
            $questlist .= '<div class="paddingleft">' . F_decode_tcecode($m['question_description']) . '</div>' . K_NEWLINE;
            if (K_ENABLE_QUESTION_EXPLANATION and !empty($m['question_explanation'])) {
                $questlist .= '<div class="paddingleft"><br /><span class="explanation">' . $l['w_explanation'] . ':</span><br />' . F_decode_tcecode($m['question_explanation']) . '</div>' . K_NEWLINE;
            }
            if (!$hide_answers) {
                // display alternative answers
                $sqla = 'SELECT *
					FROM ' . K_TABLE_ANSWERS . '
					WHERE answer_question_id=\'' . $m['question_id'] . '\'
					ORDER BY answer_enabled DESC,answer_position,answer_isright DESC';
                if ($ra = F_db_query($sqla, $db)) {
                    $answlist = '';
                    while ($ma = F_db_fetch_array($ra)) {
                        $answlist .= '<li>';
                        if (F_getBoolean($ma['answer_enabled'])) {
                            $answlist .= '<acronym class="onbox" title="' . $l['w_enabled'] . '">+</acronym>';
                        } else {
                            $answlist .= '<acronym class="offbox" title="' . $l['w_disabled'] . '">-</acronym>';
                        }
                        if ($m['question_type'] != 4) {
                            if (F_getBoolean($ma['answer_isright'])) {
                                $answlist .= ' <acronym class="okbox" title="' . $l['h_answer_right'] . '">T</acronym>';
                            } else {
                                $answlist .= ' <acronym class="nobox" title="' . $l['h_answer_wrong'] . '">F</acronym>';
                            }
                        }
                        if ($ma['answer_position'] > 0) {
                            $answlist .= ' <acronym class="onbox" title="' . $l['h_position'] . '">' . intval($ma['answer_position']) . '</acronym>';
                        } else {
                            $answlist .= ' <acronym class="offbox" title="' . $l['h_position'] . '">&nbsp;</acronym>';
                        }
                        if ($ma['answer_keyboard_key'] > 0) {
                            $answlist .= ' <acronym class="onbox" title="' . $l['h_answer_keyboard_key'] . '">' . F_text_to_xml(chr($ma['answer_keyboard_key'])) . '</acronym>';
                        } else {
                            $answlist .= ' <acronym class="offbox" title="' . $l['h_answer_keyboard_key'] . '">&nbsp;</acronym>';
                        }
                        $answlist .= ' <a href="tce_edit_answer.php?subject_module_id=' . $subject_module_id . '&amp;question_subject_id=' . $subject_id . '&amp;answer_question_id=' . $m['question_id'] . '&amp;answer_id=' . $ma['answer_id'] . '" title="' . $l['t_answers_editor'] . ' [ID = ' . $ma['answer_id'] . ']" class="xmlbutton">' . $l['w_edit'] . '</a>';
                        //$answlist .= " ";
                        //$answlist .= "".F_decode_tcecode($ma['answer_description'])."";
                        $answlist .= '<br /><br />' . K_NEWLINE;
                        $answlist .= '<div class="paddingleft">' . F_decode_tcecode($ma['answer_description']) . '</div>' . K_NEWLINE;
                        if (K_ENABLE_ANSWER_EXPLANATION and !empty($ma['answer_explanation'])) {
                            $answlist .= '<div class="paddingleft"><br /><span class="explanation">' . $l['w_explanation'] . ':</span><br />' . F_decode_tcecode($ma['answer_explanation']) . '</div>' . K_NEWLINE;
                        }
                        $answlist .= '</li>' . K_NEWLINE;
                    }
                    if (strlen($answlist) > 0) {
                        $questlist .= "<ol class=\"answer\">\n" . $answlist . "</ol><br /><br />\n";
                    }
                } else {
                    F_display_db_error();
                }
            }
            // end if hide_answers
            $questlist .= '</li>' . K_NEWLINE;
        }
        if (strlen($questlist) > 0) {
            // display the list
            echo '<ul class="question">' . K_NEWLINE;
            echo $questlist;
            echo '</ul>' . K_NEWLINE;
            echo '<div class="row"><hr /></div>' . K_NEWLINE;
            // check/uncheck all options
            echo '<span dir="' . $l['a_meta_dir'] . '">';
            echo '<input type="radio" name="checkall" id="checkall1" value="1" onclick="document.getElementById(\'form_selectquestions\').submit()" />';
            echo '<label for="checkall1">' . $l['w_check_all'] . '</label> ';
            echo '<input type="radio" name="checkall" id="checkall0" value="0" onclick="document.getElementById(\'form_selectquestions\').submit()" />';
            echo '<label for="checkall0">' . $l['w_uncheck_all'] . '</label>';
            echo '</span>' . K_NEWLINE;
            echo '&nbsp;';
            if ($l['a_meta_dir'] == 'rtl') {
                $arr = '&larr;';
            } else {
                $arr = '&rarr;';
            }
            // action options
            echo '<select name="menu_action" id="menu_action" size="0">' . K_NEWLINE;
            echo '<option value="0" style="color:gray">' . $l['m_with_selected'] . '</option>' . K_NEWLINE;
            echo '<option value="enable">' . $l['w_enable'] . '</option>' . K_NEWLINE;
            echo '<option value="disable">' . $l['w_disable'] . '</option>' . K_NEWLINE;
            echo '<option value="delete">' . $l['w_delete'] . '</option>' . K_NEWLINE;
            echo '<option value="copy">' . $l['w_copy'] . ' ' . $arr . '</option>' . K_NEWLINE;
            echo '<option value="move">' . $l['w_move'] . ' ' . $arr . '</option>' . K_NEWLINE;
            echo '</select>' . K_NEWLINE;
            // select new topic (for copy or move action)
            echo '<select name="new_subject_id" id="new_subject_id" size="0" title="' . $l['h_subject'] . '">' . K_NEWLINE;
            $sql = F_select_module_subjects_sql('module_enabled=\'1\' AND subject_enabled=\'1\'');
            if ($r = F_db_query($sql, $db)) {
                echo '<option value="0" style="color:gray">' . $l['w_subject'] . '</option>' . K_NEWLINE;
                $prev_module_id = 0;
                while ($m = F_db_fetch_array($r)) {
                    if ($m['module_id'] != $prev_module_id) {
                        $prev_module_id = $m['module_id'];
                        echo '<option value="0" style="color:gray;font-weight:bold;" disabled="disabled">* ' . htmlspecialchars($m['module_name'], ENT_NOQUOTES, $l['a_meta_charset']) . '</option>' . K_NEWLINE;
                    }
                    echo '<option value="' . $m['subject_id'] . '">&nbsp;&nbsp;&nbsp;&nbsp;' . htmlspecialchars($m['subject_name'], ENT_NOQUOTES, $l['a_meta_charset']) . '</option>' . K_NEWLINE;
                }
            } else {
                echo '</select>' . K_NEWLINE;
                F_display_db_error();
            }
            echo '</select>' . K_NEWLINE;
            // submit button
            F_submit_button("update", $l['w_update'], $l['h_update']);
        }
        // ---------------------------------------------------------------
        // -- page jumper (menu for successive pages)
        if ($rowsperpage > 0) {
            $sql = 'SELECT count(*) AS total FROM ' . K_TABLE_QUESTIONS . ' ' . $wherequery . '';
            if (!empty($order_field)) {
                $param_array = '&amp;order_field=' . urlencode($order_field) . '';
            }
            if (!empty($orderdir)) {
                $param_array .= '&amp;orderdir=' . $orderdir . '';
            }
            if (!empty($hide_answers)) {
                $param_array .= '&amp;hide_answers=' . intval($hide_answers) . '';
            }
            $param_array .= '&amp;subject_module_id=' . $subject_module_id . '';
            $param_array .= '&amp;subject_id=' . $subject_id . '';
            $param_array .= '&amp;submitted=1';
            F_show_page_navigator($_SERVER['SCRIPT_NAME'], $sql, $firstrow, $rowsperpage, $param_array);
        }
    } else {
        F_display_db_error();
    }
    return TRUE;
}