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697 lines
25 KiB
697 lines
25 KiB
<?php
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// $Id: tracking.lib.php 2007-28-02 15:51:53
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/*
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==============================================================================
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Dokeos - elearning and course management software
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Copyright (c) 2004 Dokeos S.A.
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Copyright (c) 2003 Ghent University (UGent)
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Copyright (c) 2001 Universite catholique de Louvain (UCL)
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Copyright (c) various contributors
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For a full list of contributors, see "credits.txt".
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The full license can be read in "license.txt".
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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See the GNU General Public License for more details.
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Contact: Dokeos, 181 rue Royale, B-1000 Brussels, Belgium, info@dokeos.com
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==============================================================================
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*/
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/**
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==============================================================================
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* This is the tracking library for Dokeos.
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* Include/require it in your code to use its functionality.
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*
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* @package dokeos.library
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==============================================================================
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*/
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class Tracking {
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/**
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* Calculates the time spent on the platform by a user
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* @param integer $user_id the user id
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* @return timestamp $nb_seconds
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*/
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function get_time_spent_on_the_platform($user_id) {
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$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
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$sql = 'SELECT login_date, logout_date FROM ' . $tbl_track_login . '
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WHERE login_user_id = ' . intval($user_id).' AND logout_date IS NOT NULL';
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$rs = api_sql_query($sql);
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$nb_seconds = 0;
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while ($a_connections = mysql_fetch_array($rs)) {
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$s_login_date = $a_connections["login_date"];
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$s_logout_date = $a_connections["logout_date"];
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$i_timestamp_login_date = strtotime($s_login_date);
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$i_timestamp_logout_date = strtotime($s_logout_date);
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$nb_seconds += ($i_timestamp_logout_date - $i_timestamp_login_date);
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}
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return $nb_seconds;
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}
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/**
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* Calculates the time spent on the course
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* @param integer $user_id the user id
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* @param string $course_code the course code
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* @return timestamp $nb_seconds
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*/
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function get_time_spent_on_the_course($user_id, $course_code) {
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// protect datas
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$student_id = intval($student_id);
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$course_code = addslashes($course_code);
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$tbl_track_course = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
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$sql = 'SELECT login_course_date, logout_course_date FROM ' . $tbl_track_course . '
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WHERE user_id = ' . intval($user_id) . '
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AND course_code="' . $course_code . '"';
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$rs = api_sql_query($sql);
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$nb_seconds = 0;
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while ($a_connections = mysql_fetch_array($rs)) {
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$s_login_date = $a_connections["login_course_date"];
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$s_logout_date = $a_connections["logout_course_date"];
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$i_timestamp_login_date = strtotime($s_login_date);
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$i_timestamp_logout_date = strtotime($s_logout_date);
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$nb_seconds += ($i_timestamp_logout_date - $i_timestamp_login_date);
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}
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return $nb_seconds;
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}
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function get_last_connection_date($student_id, $warning_message = false) {
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$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
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$sql = 'SELECT login_date FROM ' . $tbl_track_login . '
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WHERE login_user_id = ' . intval($student_id) . '
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ORDER BY login_date DESC LIMIT 0,1';
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$rs = api_sql_query($sql);
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if ($last_login_date = mysql_result($rs, 0, 0)) {
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if (!$warning_message) {
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return format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($last_login_date));
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} else {
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$timestamp = strtotime($last_login_date);
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$currentTimestamp = mktime();
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//If the last connection is > than 7 days, the text is red
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//345600 = 7 days in seconds
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if ($currentTimestamp - $timestamp > 604800) {
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return '<span style="color: #F00;">' . format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($last_login_date)) . '</span>';
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} else {
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return format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($last_login_date));
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}
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}
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} else {
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return false;
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}
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}
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function get_last_connection_date_on_the_course($student_id, $course_code) {
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$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
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$sql = 'SELECT login_course_date FROM ' . $tbl_track_login . '
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WHERE user_id = ' . intval($student_id) . '
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AND course_code = "' . mysql_real_escape_string($course_code) . '"
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ORDER BY login_course_date DESC LIMIT 0,1';
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$rs = api_sql_query($sql);
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if ($last_login_date = mysql_result($rs, 0, 0)) {
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$timestamp = strtotime($last_login_date);
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$currentTimestamp = mktime();
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//If the last connection is > than 7 days, the text is red
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//345600 = 7 days in seconds
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if ($currentTimestamp - $timestamp > 604800) {
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return '<span style="color: #F00;">' . format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($last_login_date)) . ' <a href="'.api_get_path(REL_CLARO_PATH).'announcements/announcements.php?action=add&remind_inactive='.$student_id.'" title="'.get_lang('RemindInactiveUser').'"><img align="middle" src="'.api_get_path(WEB_IMG_PATH).'messagebox_warning.gif" /></a></span>';
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} else {
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return format_locale_date(get_lang('DateFormatLongWithoutDay'), strtotime($last_login_date));
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}
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} else {
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return false;
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}
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}
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function count_course_per_student($user_id) {
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$user_id = intval($user_id);
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$tbl_course_rel_user = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
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$tbl_session_course_rel_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
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$sql = 'SELECT DISTINCT course_code
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FROM ' . $tbl_course_rel_user . '
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WHERE user_id = ' . $user_id;
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$rs = api_sql_query($sql, __FILE__, __LINE__);
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$nb_courses = mysql_num_rows($rs);
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$sql = 'SELECT DISTINCT course_code
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FROM ' . $tbl_session_course_rel_user . '
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WHERE id_user = ' . $user_id;
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$rs = api_sql_query($sql, __FILE__, __LINE__);
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$nb_courses += mysql_num_rows($rs);
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return $nb_courses;
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}
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function get_avg_student_progress($student_id, $course_code) {
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require_once (api_get_path(LIBRARY_PATH) . 'course.lib.php');
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// protect datas
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$student_id = intval($student_id);
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$course_code = addslashes($course_code);
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// get the informations of the course
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$a_course = CourseManager :: get_course_information($course_code);
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// table definition
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$tbl_course_lp_view = Database :: get_course_table(TABLE_LP_VIEW, $a_course['db_name']);
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$tbl_course_lp_view_item = Database :: get_course_table(TABLE_LP_ITEM_VIEW, $a_course['db_name']);
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$tbl_course_lp_item = Database :: get_course_table(TABLE_LP_ITEM, $a_course['db_name']);
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$tbl_course_lp = Database :: get_course_table(TABLE_LP_MAIN, $a_course['db_name']);
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//get the list of learning paths
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$sql = 'SELECT id FROM ' . $tbl_course_lp;
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$rs = api_sql_query($sql, __FILE__, __LINE__);
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$nb_lp = mysql_num_rows($rs);
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$avg_progress = 0;
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if ($nb_lp > 0) {
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while ($lp = Database :: fetch_array($rs)) {
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// get the progress in learning pathes
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$sqlProgress = "SELECT progress
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FROM " . $tbl_course_lp_view . " AS lp_view
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WHERE lp_view.user_id = " . $student_id . "
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AND lp_view.lp_id = " . $lp['id'] . "
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";
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$resultItem = api_sql_query($sqlProgress, __FILE__, __LINE__);
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if(Database::num_rows($resultItem)>0)
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{
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$avg_progress += mysql_result($resultItem, 0, 0);
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}
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}
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$avg_progress = round($avg_progress / $nb_lp, 1);
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}
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return $avg_progress;
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}
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function get_avg_student_score($student_id, $course_code) {
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$course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
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$course_user_table = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
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$table_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
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$course = CourseManager :: get_course_information($course_code);
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$lp_table = Database :: get_course_table(TABLE_LP_MAIN,$course['db_name']);
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$lp_item_table = Database :: get_course_table(TABLE_LP_ITEM,$course['db_name']);
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$lp_view_table = Database :: get_course_table(TABLE_LP_VIEW,$course['db_name']);
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$lp_item_view_table = Database :: get_course_table(TABLE_LP_ITEM_VIEW,$course['db_name']);
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$sql_course_lp = 'SELECT id FROM '.$lp_table;
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$sql_result_lp = api_sql_query($sql_course_lp, __FILE__, __LINE__);
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$lp_scorm_score_total = 0;
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$lp_scorm_weighting_total = 0;
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if(Database::num_rows($sql_result_lp)>0){
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//Scorm
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while($a_learnpath = mysql_fetch_array($sql_result_lp)){
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$sql = 'SELECT id, max_score
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FROM '.$lp_item_table.' AS lp_item
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WHERE lp_id='.$a_learnpath['id'].'
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AND item_type="sco" LIMIT 1';
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$rs_lp_item_id_scorm = api_sql_query($sql, __FILE__, __LINE__);
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if(Database::num_rows($rs_lp_item_id_scorm)>0){
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$lp_item_id = mysql_result($rs_lp_item_id_scorm,0,'id');
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$lp_item__max_score = mysql_result($rs_lp_item_id_scorm,0,'max_score');
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//We get the last view id of this LP
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$sql='SELECT max(id) as id FROM '.$lp_view_table.' WHERE lp_id='.$a_learnpath['id'].' AND user_id="'.intval($student_id).'"';
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$rs_last_lp_view_id = api_sql_query($sql, __FILE__, __LINE__);
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$lp_view_id = mysql_result($rs_last_lp_view_id,0,'id');
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$sql='SELECT SUM(score)/count(lp_item_id) as score FROM '.$lp_item_view_table.' WHERE lp_view_id="'.$lp_view_id.'" GROUP BY lp_view_id';
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$rs_score = api_sql_query($sql, __FILE__, __LINE__);
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if(Database::num_rows($rs_score)>0)
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{
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$lp_scorm_score = mysql_result($rs_score,0,'score');
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$lp_scorm_score = ($lp_scorm_score / $lp_item__max_score) * 100;
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$lp_scorm_score_total+=$lp_scorm_score;
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$lp_scorm_weighting_total+=100;
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}
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}
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}
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mysql_data_seek($sql_result_lp,0);
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//Quizz in LP
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while($a_learnpath = Database::fetch_array($sql_result_lp)){
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$sql = 'SELECT id as item_id, max_score
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FROM '.$lp_item_table.' AS lp_item
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WHERE lp_id='.$a_learnpath['id'].'
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AND item_type="quiz"';
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$rsItems = api_sql_query($sql, __FILE__, __LINE__);
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//We get the last view id of this LP
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$sql='SELECT max(id) as id FROM '.$lp_view_table.' WHERE lp_id='.$a_learnpath['id'].' AND user_id="'.intval($student_id).'"';
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$rs_last_lp_view_id = api_sql_query($sql, __FILE__, __LINE__);
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$lp_view_id = mysql_result($rs_last_lp_view_id,0,'id');
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$total_score = $total_weighting = 0;
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while($item = Database :: fetch_array($rsItems, 'ASSOC'))
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{
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$sql = 'SELECT score as student_score
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FROM '.$lp_item_view_table.' as lp_view_item
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WHERE lp_view_item.lp_item_id = '.$item['item_id'].'
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AND lp_view_id = "'.$lp_view_id.'"
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';
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$rsScores = api_sql_query($sql, __FILE__, __LINE__);
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if(Database::num_rows($rsScores)>0)
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{
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$total_score += mysql_result($rsScores, 0, 0);
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$total_weighting += $item['max_score'];
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$lp_scorm_score_total += ($total_score/$total_weighting)*100;
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$lp_scorm_weighting_total+=100;
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}
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}
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}
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}
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$totalScore = $lp_scorm_score_total;
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$pourcentageScore = 0;
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if($lp_scorm_weighting_total>0)
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{
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$pourcentageScore = round(($totalScore * 100) / $lp_scorm_weighting_total);
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}
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return $pourcentageScore;
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}
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/**
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* gets the list of students followed by coach
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* @param integer $coach_id the id of the coach
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* @return Array the list of students
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*/
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function get_student_followed_by_coach($coach_id) {
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$coach_id = intval($coach_id);
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$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
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$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
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$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
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$a_students = array ();
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//////////////////////////////////////////////////////////////
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// At first, courses where $coach_id is coach of the course //
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//////////////////////////////////////////////////////////////
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$sql = 'SELECT id_session, course_code FROM ' . $tbl_session_course . ' WHERE id_coach=' . $coach_id;
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$result = api_sql_query($sql);
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while ($a_courses = mysql_fetch_array($result)) {
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$course_code = $a_courses["course_code"];
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$id_session = $a_courses["id_session"];
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$sql = "SELECT distinct srcru.id_user
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FROM $tbl_session_course_user AS srcru
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WHERE course_code='$course_code' AND id_session='$id_session'";
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$rs = api_sql_query($sql);
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while ($row = mysql_fetch_array($rs)) {
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$a_students[$row['id_user']] = $row['id_user'];
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}
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}
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//////////////////////////////////////////////////////////////
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// Then, courses where $coach_id is coach of the session //
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//////////////////////////////////////////////////////////////
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$sql = 'SELECT session_course_user.id_user
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FROM ' . $tbl_session_course_user . ' as session_course_user
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INNER JOIN ' . $tbl_session_course . ' as session_course
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ON session_course.course_code = session_course_user.course_code
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AND session_course_user.id_session = session_course.id_session
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INNER JOIN ' . $tbl_session . ' as session
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ON session.id = session_course.id_session
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AND session.id_coach = ' . $coach_id;
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$result = api_sql_query($sql);
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while ($row = mysql_fetch_array($result)) {
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$a_students[$row['id_user']] = $row['id_user'];
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}
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return $a_students;
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}
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function get_student_followed_by_coach_in_a_session($id_session, $coach_id) {
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$coach_id = intval($coach_id);
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$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
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$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
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$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
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$a_students = array ();
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//////////////////////////////////////////////////////////////
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// At first, courses where $coach_id is coach of the course //
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//////////////////////////////////////////////////////////////
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$sql = 'SELECT course_code FROM ' . $tbl_session_course . ' WHERE id_session="' . $id_session . '" AND id_coach=' . $coach_id;
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$result = api_sql_query($sql);
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while ($a_courses = mysql_fetch_array($result)) {
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$course_code = $a_courses["course_code"];
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$sql = "SELECT distinct srcru.id_user
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FROM $tbl_session_course_user AS srcru
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WHERE course_code='$course_code' and id_session = '" . $id_session . "'";
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$rs = api_sql_query($sql, __FILE__, __LINE__);
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while ($row = mysql_fetch_array($rs)) {
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$a_students[$row['id_user']] = $row['id_user'];
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}
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}
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//////////////////////////////////////////////////////////////
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// Then, courses where $coach_id is coach of the session //
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//////////////////////////////////////////////////////////////
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$dsl_session_coach = 'SELECT id_coach FROM ' . $tbl_session . ' WHERE id="' . $id_session . '" AND id_coach="' . $coach_id . '"';
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$result = api_sql_query($dsl_session_coach, __FILE__, __LINE__);
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//He is the session_coach so we select all the users in the session
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if (mysql_num_rows($result) > 0) {
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$sql = 'SELECT DISTINCT srcru.id_user FROM ' . $tbl_session_course_user . ' AS srcru WHERE id_session="' . $id_session . '"';
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$result = api_sql_query($sql);
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while ($row = mysql_fetch_array($result)) {
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$a_students[$row['id_user']] = $row['id_user'];
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}
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}
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return $a_students;
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}
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function is_allowed_to_coach_student($coach_id, $student_id) {
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$coach_id = intval($coach_id);
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$student_id = intval($student_id);
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$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
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$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
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$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
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//////////////////////////////////////////////////////////////
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// At first, courses where $coach_id is coach of the course //
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//////////////////////////////////////////////////////////////
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$sql = 'SELECT 1
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FROM ' . $tbl_session_course_user . ' AS session_course_user
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INNER JOIN ' . $tbl_session_course . ' AS session_course
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ON session_course.course_code = session_course_user.course_code
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AND id_coach=' . $coach_id . '
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WHERE id_user=' . $student_id;
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$result = api_sql_query($sql, __FILE__, __LINE__);
|
|
if (mysql_num_rows($result) > 0) {
|
|
return true;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////
|
|
// Then, courses where $coach_id is coach of the session //
|
|
//////////////////////////////////////////////////////////////
|
|
|
|
$sql = 'SELECT session_course_user.id_user
|
|
FROM ' . $tbl_session_course_user . ' as session_course_user
|
|
INNER JOIN ' . $tbl_session_course . ' as session_course
|
|
ON session_course.course_code = session_course_user.course_code
|
|
INNER JOIN ' . $tbl_session . ' as session
|
|
ON session.id = session_course.id_session
|
|
AND session.id_coach = ' . $coach_id . '
|
|
WHERE id_user = ' . $student_id;
|
|
$result = api_sql_query($sql, __FILE__, __LINE__);
|
|
if (mysql_num_rows($result) > 0) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
function get_courses_followed_by_coach($coach_id, $id_session = '') {
|
|
|
|
$coach_id = intval($coach_id);
|
|
if (!empty ($id_session))
|
|
$id_session = intval($id_session);
|
|
|
|
$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
|
|
$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
|
|
$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
|
|
$tbl_course = Database :: get_main_table(TABLE_MAIN_COURSE);
|
|
|
|
//////////////////////////////////////////////////////////////
|
|
// At first, courses where $coach_id is coach of the course //
|
|
//////////////////////////////////////////////////////////////
|
|
$sql = 'SELECT DISTINCT course_code FROM ' . $tbl_session_course . ' WHERE id_coach=' . $coach_id;
|
|
if (!empty ($id_session))
|
|
$sql .= ' AND id_session=' . $id_session;
|
|
$result = api_sql_query($sql, __FILE__, __LINE__);
|
|
while ($row = mysql_fetch_array($result)) {
|
|
$a_courses[$row['course_code']] = $row['course_code'];
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////
|
|
// Then, courses where $coach_id is coach of the session //
|
|
//////////////////////////////////////////////////////////////
|
|
$sql = 'SELECT DISTINCT session_course.course_code
|
|
FROM ' . $tbl_session_course . ' as session_course
|
|
INNER JOIN ' . $tbl_session . ' as session
|
|
ON session.id = session_course.id_session
|
|
AND session.id_coach = ' . $coach_id . '
|
|
INNER JOIN ' . $tbl_course . ' as course
|
|
ON course.code = session_course.course_code';
|
|
if (!empty ($id_session))
|
|
$sql .= ' WHERE session_course.id_session=' . $id_session;
|
|
$result = api_sql_query($sql, __FILE__, __LINE__);
|
|
|
|
while ($row = mysql_fetch_array($result)) {
|
|
$a_courses[$row['course_code']] = $row['course_code'];
|
|
}
|
|
|
|
return $a_courses;
|
|
}
|
|
|
|
function get_sessions_coached_by_user($coach_id) {
|
|
// table definition
|
|
$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
|
|
$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
|
|
|
|
// protect datas
|
|
$coach_id = intval($coach_id);
|
|
|
|
// session where we are general coach
|
|
$sql = 'SELECT DISTINCT id, name, date_start, date_end
|
|
FROM ' . $tbl_session . '
|
|
WHERE id_coach=' . $coach_id;
|
|
|
|
$rs = api_sql_query($sql);
|
|
while ($row = mysql_fetch_array($rs)) {
|
|
$a_sessions[$row["id"]] = $row;
|
|
}
|
|
|
|
// session where we are coach of a course
|
|
$sql = 'SELECT DISTINCT session.id, session.name, session.date_start, session.date_end
|
|
FROM ' . $tbl_session . ' as session
|
|
INNER JOIN ' . $tbl_session_course . ' as session_course
|
|
ON session.id = session_course.id_session
|
|
AND session_course.id_coach=' . $coach_id;
|
|
$rs = api_sql_query($sql);
|
|
|
|
while ($row = mysql_fetch_array($rs)) {
|
|
$a_sessions[$row["id"]] = $row;
|
|
}
|
|
|
|
foreach ($a_sessions as & $session) {
|
|
if ($session['date_start'] == '0000-00-00') {
|
|
$session['status'] = get_lang('SessionActive');
|
|
}
|
|
else {
|
|
$date_start = explode('-', $session['date_start']);
|
|
$time_start = mktime(0, 0, 0, $date_start[1], $date_start[2], $date_start[0]);
|
|
$date_end = explode('-', $session['date_end']);
|
|
$time_end = mktime(0, 0, 0, $date_end[1], $date_end[2], $date_end[0]);
|
|
if ($time_start < time() && time() < $time_end) {
|
|
$session['status'] = get_lang('SessionActive');
|
|
}
|
|
else{
|
|
if (time() < $time_start) {
|
|
$session['status'] = get_lang('SessionFuture');
|
|
}
|
|
else{
|
|
if (time() > $time_end) {
|
|
$session['status'] = get_lang('SessionPast');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return $a_sessions;
|
|
|
|
}
|
|
|
|
function get_courses_list_from_session($session_id) {
|
|
//protect datas
|
|
$session_id = intval($session_id);
|
|
|
|
// table definition
|
|
$tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
|
|
$tbl_session_course = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE);
|
|
|
|
$sql = 'SELECT DISTINCT course_code, id_coach
|
|
FROM ' . $tbl_session_course . '
|
|
WHERE id_session=' . $session_id;
|
|
|
|
$rs = api_sql_query($sql, __FILE__, __LINE__);
|
|
$a_courses = array ();
|
|
while ($row = mysql_fetch_array($rs)) {
|
|
$a_courses[$row['course_code']] = $row;
|
|
}
|
|
return $a_courses;
|
|
}
|
|
|
|
function count_student_assignments($student_id, $course_code) {
|
|
require_once (api_get_path(LIBRARY_PATH) . 'course.lib.php');
|
|
|
|
// protect datas
|
|
$student_id = intval($student_id);
|
|
$course_code = addslashes($course_code);
|
|
|
|
// get the informations of the course
|
|
$a_course = CourseManager :: get_course_information($course_code);
|
|
|
|
// table definition
|
|
$tbl_item_property = Database :: get_course_table(TABLE_ITEM_PROPERTY, $a_course['db_name']);
|
|
$sql = 'SELECT 1
|
|
FROM ' . $tbl_item_property . '
|
|
WHERE insert_user_id=' . $student_id . '
|
|
AND tool="work"';
|
|
|
|
$rs = api_sql_query($sql, __LINE__, __FILE__);
|
|
return mysql_num_rows($rs);
|
|
}
|
|
|
|
function count_student_messages($student_id, $course_code) {
|
|
require_once (api_get_path(LIBRARY_PATH) . 'course.lib.php');
|
|
|
|
// protect datas
|
|
$student_id = intval($student_id);
|
|
$course_code = addslashes($course_code);
|
|
|
|
// get the informations of the course
|
|
$a_course = CourseManager :: get_course_information($course_code);
|
|
|
|
// table definition
|
|
$tbl_messages = Database :: get_course_table(TABLE_FORUM_POST, $a_course['db_name']);
|
|
$sql = 'SELECT 1
|
|
FROM ' . $tbl_messages . '
|
|
WHERE poster_id=' . $student_id;
|
|
|
|
$rs = api_sql_query($sql, __LINE__, __FILE__);
|
|
return mysql_num_rows($rs);
|
|
}
|
|
|
|
function count_student_visited_links($student_id, $course_code) {
|
|
// protect datas
|
|
$student_id = intval($student_id);
|
|
$course_code = addslashes($course_code);
|
|
|
|
// table definition
|
|
$tbl_stats_links = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LINKS);
|
|
|
|
$sql = 'SELECT 1
|
|
FROM ' . $tbl_stats_links . '
|
|
WHERE links_user_id=' . $student_id . '
|
|
AND links_cours_id="' . $course_code . '"';
|
|
|
|
$rs = api_sql_query($sql, __LINE__, __FILE__);
|
|
return mysql_num_rows($rs);
|
|
}
|
|
|
|
function count_student_downloaded_documents($student_id, $course_code) {
|
|
// protect datas
|
|
$student_id = intval($student_id);
|
|
$course_code = addslashes($course_code);
|
|
|
|
// table definition
|
|
$tbl_stats_documents = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_DOWNLOADS);
|
|
|
|
$sql = 'SELECT 1
|
|
FROM ' . $tbl_stats_documents . '
|
|
WHERE down_user_id=' . $student_id . '
|
|
AND down_cours_id="' . $course_code . '"';
|
|
|
|
$rs = api_sql_query($sql, __LINE__, __FILE__);
|
|
return mysql_num_rows($rs);
|
|
}
|
|
|
|
function get_course_list_in_session_from_student($user_id, $id_session) {
|
|
$user_id = intval($user_id);
|
|
$id_session = intval($id_session);
|
|
$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
|
|
$sql = 'SELECT course_code FROM ' . $tbl_session_course_user . ' WHERE id_user="' . $user_id . '" AND id_session="' . $id_session . '"';
|
|
$result = api_sql_query($sql, __LINE__, __FILE__);
|
|
$a_courses = array ();
|
|
while ($row = mysql_fetch_array($result)) {
|
|
$a_courses[$row['course_code']] = $row['course_code'];
|
|
}
|
|
return $a_courses;
|
|
}
|
|
|
|
function get_inactives_students_in_course($course_code, $since, $session_id=0)
|
|
{
|
|
$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_COURSE_ACCESS);
|
|
$tbl_session_course_user = Database :: get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
|
|
$inner = '';
|
|
if($session_id!=0)
|
|
{
|
|
$inner = ' INNER JOIN '.$tbl_session_course_user.' session_course_user
|
|
ON stats_login.course_code = session_course_user.course_code
|
|
AND session_course_user.id_session = '.intval($session_id).'
|
|
AND session_course_user.id_user = stats_login.user_id ';
|
|
}
|
|
$sql = 'SELECT user_id, MAX(login_course_date) max_date FROM'.$tbl_track_login.' stats_login'.$inner.'
|
|
GROUP BY user_id
|
|
HAVING DATE_ADD(max_date, INTERVAL '.$since.' DAY) < NOW() ';
|
|
|
|
$rs = api_sql_query($sql,__FILE__,__LINE__);
|
|
$inactive_users = array();
|
|
while($user = Database::fetch_array($rs))
|
|
{
|
|
$inactive_users[] = $user['user_id'];
|
|
}
|
|
return $inactive_users;
|
|
}
|
|
|
|
}
|
|
?>
|