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138 lines
4.0 KiB
PHP
138 lines
4.0 KiB
PHP
<?PHP // $Id$
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// Produces a graph of log accesses
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require("../config.php");
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require("lib.php");
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require("$CFG->libdir/graphlib.php");
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require_variable($id); // Course ID
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require_variable($type); // Graph Type
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optional_variable($user); // Student ID
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optional_variable($date); // A time of a day (in GMT)
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if (! $course = get_record("course", "id", $id)) {
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error("Course is misconfigured");
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}
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require_login($course->id);
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if (!isteacher($course->id)) {
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if (! ($type == "usercourse.png" and $user == $USER->id) ) {
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error("Sorry, you aren't allowed to see this.");
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}
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}
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if ($user) {
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if (! $user = get_record("user", "id", $user)) {
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error("Can not find that user");
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}
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}
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$timenow = time();
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switch ($type) {
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case "usercourse.png":
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$COURSE_MAX_LOG_DISPLAY = $COURSE_MAX_LOG_DISPLAY * 3600 * 24; // seconds
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if ($timenow - $course->startdate > $COURSE_MAX_LOG_DISPLAY) {
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$course->startdate = $timenow - $COURSE_MAX_LOG_DISPLAY;
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}
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$timestart = $coursestart = usergetmidnight($course->startdate);
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$i = 0;
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while ($timestart < $timenow) {
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$timefinish = $timestart + 86400;
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$days[$i] = userdate($timestart, "%a %e %b");
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$logs[$i] = 0;
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$i++;
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$timestart = $timefinish;
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}
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if ($rawlogs = get_records_sql("SELECT floor((`time` - $coursestart)/86400) as day,
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count(*) as num FROM log
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WHERE user = '$user->id'
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AND course = '$course->id'
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AND `time` > '$coursestart'
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GROUP BY day ")) {
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foreach ($rawlogs as $rawlog) {
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$logs[$rawlog->day] = $rawlog->num;
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}
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}
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$maxlogs = max($logs);
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$graph = new graph(750, 400);
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$graph->parameter['title'] = "Hits on $course->shortname by $user->firstname $user->lastname";
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$graph->x_data = $days;
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$graph->y_data['logs'] = $logs;
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$graph->y_format['logs'] = array('colour' => 'blue','line' => 'line');
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$graph->y_label_left = "Hits";
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$graph->label_size = "6";
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$graph->y_order = array('logs');
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$graph->parameter['shadow'] = 'none';
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$graph->draw_stack();
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break;
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case "userday.png":
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if ($date) {
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$daystart = usergetmidnight($date);
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} else {
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$daystart = usergetmidnight(time());
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}
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$dayfinish = $daystart + 86400;
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for ($i=0; $i<=23; $i++) {
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$logs[$i] = 0;
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$hour = $daystart + $i * 3600;
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$hh = (int)userdate($hour, "%I");
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$hours[$i] = userdate($hour, "$hh %p");
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}
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if ($rawlogs = get_records_sql("SELECT floor((`time` - $daystart)/3600) as hour,
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count(*) as num FROM log
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WHERE user = '$user->id'
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AND course = '$course->id'
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AND `time` > '$daystart'
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GROUP BY hour ")) {
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foreach ($rawlogs as $rawlog) {
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$logs[$rawlog->hour] = $rawlog->num;
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}
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}
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$maxlogs = max($logs);
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$graph = new graph(750, 400);
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$graph->parameter['title'] = "Today's hits on $course->shortname by $user->firstname $user->lastname";
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$graph->x_data = $hours;
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$graph->y_data['logs'] = $logs;
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$graph->y_format['logs'] = array('colour' => 'blue','bar' => 'fill','legend' =>'actual','bar_size' => 0.9);
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$graph->y_label_left = "Hits";
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$graph->label_size = "6";
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$graph->y_order = array('logs');
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$graph->parameter['shadow'] = 'none';
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$graph->draw_stack();
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break;
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default:
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break;
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}
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?>
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