MOODLE - Portable Document Format - moodle

Question

Looking for download (PDF, CSV) the data from moodle custompage. Are there API function, need to call for downloading the data from custompage. The custompage has a table data:
custompage
$table = new html_table();
$table->head = array('course', 'users');
$table->attributes['class'] = 'table';
$sql = "SELECT c.fullname, count(cc.userid) AS 'completed'
FROM {course_completions} cc JOIN {course} ON c.id = cc.course WHERE cc.timestarted > 0
GROUP BY c.fullname ";
$mds = $DB->get_records_sql($sql);
foreach ($mds as $m) {
$table->data[] = new html_table_row(array(implode(array($m->fullname. $m->lastname)),
$m->completed ));
}
echo html_writer::table($table);

Answer 1

For a basic PDF
require_once($CFG->libdir . '/pdflib.php');
$doc = new pdf();
$doc->AddPage();
$output = html_writer::table($table);
$doc->writeHTML($output);
$doc->Output('filename.pdf');
There is a better example in the Moodle source here - /lib/tests/other/pdflibtestpage.php
For CSV
require_once($CFG->libdir . '/csvlib.class.php');
csv_export_writer::download_array('filename.csv, $mds);
Both of the above should be before printing anything to the screen so they are downloaded.
Also in your SQL, you should use GROUP BY c.id because the course fullname isn't unique.