}
$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
$stats = F_getArrayStatistics($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;
$xml .= K_TAB . K_TAB . K_TAB . '<passed_percent>' . round(100 * ($passed / $stats['number']['score'])) . '</passed_percent>' . K_NEWLINE;
foreach ($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;
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;
}
$xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<right>' . round($columns['right'], 3) . '</right>' . K_NEWLINE;
if (in_array($row, $calcpercent)) {
$xml .= K_TAB . K_TAB . K_TAB . K_TAB . '<right_percent>' . round(100 * ($columns['right'] / $usrtestdata['all'])) . '</right_percent>' . K_NEWLINE;
/**
* Returns users statistic array for the selected test.
* @param $test_id (int) test ID.
* @param $group_id (int) group ID - if greater than zero, filter stats for the specified user group.
* @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 $full_order_field (string) Ordering fields for SQL query.
* @param $pubmode (boolean) If true filter the results for the public interface.
* @param $stats (int) 2 = full stats; 1 = user stats; 0 = disabled stats;
* return $data array containing test statistics.
*/
function F_getAllUsersTestStat($test_id, $group_id = 0, $user_id = 0, $startdate = 0, $enddate = 0, $full_order_field = 'total_score', $pubmode = false, $stats = 2)
{
require_once '../config/tce_config.php';
require_once '../../shared/code/tce_functions_test.php';
require_once '../../shared/code/tce_functions_statistics.php';
global $db, $l;
$test_id = intval($test_id);
$group_id = intval($group_id);
$user_id = intval($user_id);
$data = array();
$data['svgpoints'] = '';
$data['testuser'] = array();
$sqlr = 'SELECT
testuser_id,
testuser_test_id,
testuser_creation_time,
testuser_status,
user_id,
user_lastname,
user_firstname,
user_name,
user_email,
SUM(testlog_score) AS total_score,
MAX(testlog_change_time) AS testuser_end_time
FROM ' . K_TABLE_TESTS_LOGS . ', ' . K_TABLE_TEST_USER . ', ' . K_TABLE_USERS . '';
if ($group_id > 0) {
$sqlr .= ',' . K_TABLE_USERGROUP . '';
}
$sqlr .= ' WHERE testlog_testuser_id=testuser_id AND testuser_user_id=user_id';
if ($test_id > 0) {
$sqlr .= ' AND testuser_test_id=' . $test_id . '';
} elseif ($pubmode) {
$sqlr .= ' AND testuser_test_id IN (' . F_getTestIDResults($test_id, $user_id) . ')';
}
if ($group_id > 0) {
$sqlr .= ' AND usrgrp_user_id=user_id AND usrgrp_group_id=' . $group_id . '';
}
if ($user_id > 0) {
$sqlr .= ' AND user_id=' . $user_id . '';
}
if (!empty($startdate)) {
$startdate_time = strtotime($startdate);
$startdate = date(K_TIMESTAMP_FORMAT, $startdate_time);
$sqlr .= ' AND testuser_creation_time>=\'' . $startdate . '\'';
}
if (!empty($enddate)) {
$enddate_time = strtotime($enddate);
$enddate = date(K_TIMESTAMP_FORMAT, $enddate_time);
$sqlr .= ' AND testuser_creation_time<=\'' . $enddate . '\'';
}
if ($stats > 1) {
// get stats
$data += F_getTestStat($test_id, $group_id, $user_id, $startdate, $enddate);
}
$sqlr .= ' GROUP BY testuser_id, testuser_test_id, testuser_creation_time, user_id, user_lastname, user_firstname, user_name, user_email, testuser_status
ORDER BY ' . $full_order_field . '';
if ($rr = F_db_query($sqlr, $db)) {
$itemcount = 0;
$passed = 0;
$statsdata = array();
$statsdata['score'] = array();
$statsdata['right'] = array();
$statsdata['wrong'] = array();
$statsdata['unanswered'] = array();
$statsdata['undisplayed'] = array();
$statsdata['unrated'] = array();
while ($mr = F_db_fetch_array($rr)) {
$itemcount++;
$usrtestdata = F_getUserTestStat($mr['testuser_test_id'], $mr['user_id'], $mr['testuser_id']);
if ($stats > 0) {
$teststat = F_getTestStat($mr['testuser_test_id'], $group_id, $mr['user_id'], $startdate, $enddate, $mr['testuser_id']);
}
$data['testuser']['\'' . $mr['testuser_id'] . '\''] = array();
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['test'] = $usrtestdata;
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['num'] = $itemcount;
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['id'] = $mr['testuser_id'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['user_id'] = $mr['user_id'];
$halfscore = $usrtestdata['test_max_score'] / 2;
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['testuser_creation_time'] = $mr['testuser_creation_time'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['testuser_end_time'] = $mr['testuser_end_time'];
if ($mr['testuser_end_time'] <= 0 or strtotime($mr['testuser_end_time']) < strtotime($mr['testuser_creation_time'])) {
$time_diff = $usrtestdata['test_duration_time'] * K_SECONDS_IN_MINUTE;
} else {
$time_diff = strtotime($mr['testuser_end_time']) - strtotime($mr['testuser_creation_time']);
//sec
}
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['time_diff'] = gmdate('H:i:s', $time_diff);
$passmsg = false;
if ($usrtestdata['test_score_threshold'] > 0) {
if ($usrtestdata['user_score'] >= $usrtestdata['test_score_threshold']) {
$passmsg = true;
$passed++;
}
} elseif ($usrtestdata['user_score'] > $halfscore) {
$passmsg = true;
$passed++;
}
if ($usrtestdata['test_max_score'] > 0) {
$total_score_perc = round(100 * $mr['total_score'] / $usrtestdata['test_max_score']);
} else {
$total_score_perc = 0;
}
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['passmsg'] = $passmsg;
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['user_name'] = $mr['user_name'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['user_email'] = $mr['user_email'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['user_lastname'] = $mr['user_lastname'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['user_firstname'] = $mr['user_firstname'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['total_score'] = $mr['total_score'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['total_score_perc'] = $total_score_perc;
if ($stats > 0) {
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['right'] = $teststat['qstats']['right'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['right_perc'] = $teststat['qstats']['right_perc'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['wrong'] = $teststat['qstats']['wrong'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['wrong_perc'] = $teststat['qstats']['wrong_perc'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['unanswered'] = $teststat['qstats']['unanswered'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['unanswered_perc'] = $teststat['qstats']['unanswered_perc'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['undisplayed'] = $teststat['qstats']['undisplayed'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['undisplayed_perc'] = $teststat['qstats']['undisplayed_perc'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['unrated'] = $teststat['qstats']['unrated'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['unrated_perc'] = $teststat['qstats']['unrated_perc'];
} else {
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['right'] = '';
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['right_perc'] = '';
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['wrong'] = '';
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['wrong_perc'] = '';
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['unanswered'] = '';
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['unanswered_perc'] = '';
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['undisplayed'] = '';
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['undisplayed_perc'] = '';
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['unrated'] = '';
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['unrated_perc'] = '';
}
if ($mr['testuser_status'] > 3) {
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['locked'] = true;
} else {
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['locked'] = false;
}
// remaining user time in minutes
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['remaining_time'] = round((time() - strtotime($usrtestdata['user_test_start_time'])) / K_SECONDS_IN_MINUTE) - $usrtestdata['test_duration_time'];
$data['testuser']['\'' . $mr['testuser_id'] . '\'']['user_comment'] = $usrtestdata['user_comment'];
// SVG points
$data['svgpoints'] .= 'x' . $data['testuser']['\'' . $mr['testuser_id'] . '\'']['total_score_perc'] . 'v' . $data['testuser']['\'' . $mr['testuser_id'] . '\'']['right_perc'];
// collects data for descriptive statistics
$statsdata['score'][] = $mr['total_score'];
$statsdata['score_perc'][] = $total_score_perc;
if ($stats > 0) {
$statsdata['right'][] = $teststat['qstats']['right'];
$statsdata['right_perc'][] = $teststat['qstats']['right_perc'];
$statsdata['wrong'][] = $teststat['qstats']['wrong'];
$statsdata['wrong_perc'][] = $teststat['qstats']['wrong_perc'];
$statsdata['unanswered'][] = $teststat['qstats']['unanswered'];
$statsdata['unanswered_perc'][] = $teststat['qstats']['unanswered_perc'];
$statsdata['undisplayed'][] = $teststat['qstats']['undisplayed'];
$statsdata['undisplayed_perc'][] = $teststat['qstats']['undisplayed_perc'];
$statsdata['unrated'][] = $teststat['qstats']['unrated'];
$statsdata['unrated_perc'][] = $teststat['qstats']['unrated_perc'];
} else {
$statsdata['right'][] = '';
$statsdata['right_perc'][] = '';
$statsdata['wrong'][] = '';
$statsdata['wrong_perc'][] = '';
$statsdata['unanswered'][] = '';
$statsdata['unanswered_perc'][] = '';
$statsdata['undisplayed'][] = '';
$statsdata['undisplayed_perc'][] = '';
$statsdata['unrated'][] = '';
$statsdata['unrated_perc'][] = '';
}
}
} else {
F_display_db_error();
}
$data['passed'] = $passed;
$passed_perc = 0;
if ($itemcount > 0) {
$passed_perc = round(100 * $passed / $itemcount);
}
$data['passed_perc'] = $passed_perc;
$data['num_records'] = $itemcount;
if ($itemcount > 0) {
// calculate statistics
$data['statistics'] = F_getArrayStatistics($statsdata);
}
return $data;
}
/**
* 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;
}
/**
* Export all test results to CSV.
* @author Nicola Asuni
* @since 2006-03-30
* @param $test_id (int) Test ID
* @param $group_id (int) Group ID
* @param $order_field (string) ORDER BY portion of the SQL query
* @return CSV data
*/
function F_csv_export_result_allusers($test_id, $group_id = 0, $order_field = "")
{
global $l, $db;
require_once '../config/tce_config.php';
require_once '../../shared/code/tce_authorization.php';
require_once '../../shared/code/tce_functions_test_stats.php';
require_once 'tce_functions_user_select.php';
require_once '../code/tce_functions_statistics.php';
$test_id = intval($test_id);
$group_id = intval($group_id);
$order_field = F_escape_sql($order_field);
// check user's authorization
if (!F_isAuthorizedUser(K_TABLE_TESTS, 'test_id', $test_id, 'test_user_id')) {
return '';
}
if (!F_isAuthorizedEditorForGroup($group_id)) {
return '';
}
// statistical data
$statsdata = array();
$statsdata['score'] = array();
$statsdata['right'] = array();
$statsdata['wrong'] = array();
$statsdata['unanswered'] = array();
$statsdata['undisplayed'] = array();
$statsdata['unrated'] = array();
$csv = '';
// CSV data to be returned
// general data
$csv .= 'TCExam Results Summary' . K_NEWLINE . K_NEWLINE;
$csv .= 'version' . K_TAB . K_TCEXAM_VERSION . K_NEWLINE;
$csv .= 'lang' . K_TAB . K_USER_LANG . K_NEWLINE;
$csv .= 'date' . K_TAB . date(K_TIMESTAMP_FORMAT) . K_NEWLINE;
$csv .= 'test_id' . K_TAB . $test_id . K_NEWLINE;
$csv .= 'group_id' . K_TAB . $group_id . K_NEWLINE;
$csv .= K_NEWLINE . K_NEWLINE;
// separator
// print column names
$csv .= '#';
$csv .= K_TAB . $l['w_time_begin'];
$csv .= K_TAB . $l['w_time_end'];
$csv .= K_TAB . $l['w_time'];
$csv .= K_TAB . $l['w_lastname'];
$csv .= K_TAB . $l['w_firstname'];
$csv .= K_TAB . $l['w_user'];
$csv .= K_TAB . $l['w_passed'];
$csv .= K_TAB . $l['w_score'];
$csv .= K_TAB . $l['w_answers_right'];
$csv .= K_TAB . $l['w_answers_wrong'];
$csv .= K_TAB . $l['w_questions_unanswered'];
$csv .= K_TAB . $l['w_questions_undisplayed'];
$csv .= K_TAB . $l['w_questions_unrated'];
$csv .= K_TAB . $l['w_comment'];
$passed = 0;
// output users stats
$sqlr = 'SELECT
testuser_id,
testuser_creation_time,
user_id,
user_lastname,
user_firstname,
user_name,
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_USERS . '
WHERE testlog_testuser_id=testuser_id
AND testuser_user_id=user_id
AND testuser_test_id=' . $test_id . '';
if ($group_id > 0) {
$sqlr .= ' AND testuser_user_id IN (
SELECT usrgrp_user_id
FROM ' . K_TABLE_USERGROUP . '
WHERE usrgrp_group_id=' . $group_id . '
)';
}
if ($_SESSION['session_user_level'] < K_AUTH_ADMINISTRATOR) {
$sqlr .= ' AND (user_level<' . $_SESSION['session_user_level'] . ' OR user_id=' . $_SESSION['session_user_id'] . ')';
}
$sqlr .= ' GROUP BY testuser_id, testuser_creation_time, user_id, user_lastname, user_firstname, user_name
ORDER BY ' . $order_field . '';
if ($rr = F_db_query($sqlr, $db)) {
$itemcount = 0;
while ($mr = F_db_fetch_array($rr)) {
$itemcount++;
$csv .= K_NEWLINE . $itemcount;
$csv .= K_TAB . $mr['testuser_creation_time'];
$csv .= K_TAB . $mr['testuser_end_time'];
$time_diff = strtotime($mr['testuser_end_time']) - strtotime($mr['testuser_creation_time']);
//sec
$time_diff = gmdate('H:i:s', $time_diff);
$csv .= K_TAB . $time_diff;
$csv .= K_TAB . $mr['user_lastname'];
$csv .= K_TAB . $mr['user_firstname'];
$csv .= K_TAB . $mr['user_name'];
$usrtestdata = F_getUserTestStat($test_id, $mr['user_id']);
$halfscore = $usrtestdata['max_score'] / 2;
if ($usrtestdata['score_threshold'] > 0) {
if ($usrtestdata['score'] >= $usrtestdata['score_threshold']) {
$csv .= K_TAB . 'true';
$passed++;
} else {
$csv .= K_TAB . 'false';
}
} else {
$csv .= K_TAB;
if ($usrtestdata['score'] > $halfscore) {
$passed++;
}
}
$csv .= K_TAB . $mr['total_score'];
$csv .= K_TAB . $usrtestdata['right'];
$csv .= K_TAB . $usrtestdata['wrong'];
$csv .= K_TAB . $usrtestdata['unanswered'];
$csv .= K_TAB . $usrtestdata['undisplayed'];
$csv .= K_TAB . $usrtestdata['unrated'];
$csv .= K_TAB . F_compact_string(htmlspecialchars($usrtestdata['comment'], ENT_NOQUOTES, $l['a_meta_charset']));
// collects data for descriptive statistics
$statsdata['score'][] = $mr['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();
}
$csv .= K_NEWLINE;
// separator
// calculate statistics
$stats = F_getArrayStatistics($statsdata);
$excludestat = array('sum', 'variance');
$calcpercent = array('mean', 'median', 'mode', 'minimum', 'maximum', 'range', 'standard_deviation');
$csv .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . 'passed_total' . K_TAB . $passed . K_NEWLINE;
$csv .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . 'passed_percent [%]' . K_TAB . round(100 * ($passed / $itemcount)) . K_NEWLINE;
$csv .= K_NEWLINE;
// separator
$csv .= $l['w_statistics'] . K_NEWLINE;
// separator
// headers
$csv .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB;
$csv .= $l['w_score'] . K_TAB;
$csv .= $l['w_answers_right_th'] . K_TAB;
$csv .= $l['w_answers_wrong_th'] . K_TAB;
$csv .= $l['w_questions_unanswered_th'] . K_TAB;
$csv .= $l['w_questions_undisplayed_th'] . K_TAB;
$csv .= $l['w_questions_unrated'] . K_NEWLINE;
foreach ($stats as $row => $columns) {
if (!in_array($row, $excludestat)) {
$csv .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . $l['w_' . $row] . K_TAB;
$csv .= round($columns['score'], 3) . K_TAB;
$csv .= round($columns['right'], 3) . K_TAB;
$csv .= round($columns['wrong'], 3) . K_TAB;
$csv .= round($columns['unanswered'], 3) . K_TAB;
$csv .= round($columns['undisplayed'], 3) . K_TAB;
$csv .= round($columns['unrated'], 3) . K_NEWLINE;
if (in_array($row, $calcpercent)) {
$csv .= K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . K_TAB . $row . ' [%]' . K_TAB;
$csv .= round(100 * ($columns['score'] / $usrtestdata['max_score'])) . K_TAB;
$csv .= round(100 * ($columns['right'] / $usrtestdata['all'])) . K_TAB;
$csv .= round(100 * ($columns['wrong'] / $usrtestdata['all'])) . K_TAB;
$csv .= round(100 * ($columns['unanswered'] / $usrtestdata['all'])) . K_TAB;
$csv .= round(100 * ($columns['undisplayed'] / $usrtestdata['all'])) . K_TAB;
$csv .= round(100 * ($columns['unrated'] / $usrtestdata['all'])) . K_NEWLINE;
}
}
}
return $csv;
}