} else {
$data[] = clean_text($row->sitename);
}
$data[] = number_format($row->users);
$data[] = number_format($row->courses);
$table->data[] = $data;
}
echo html_writer::table($table);
*/
echo html_writer::end_tag('div');
/**
* Display the major and minor registrations for the past 6 months
*/
echo $OUTPUT->heading(get_string('versionsused', 'local_hub'));
$partialminorchartexists = check_for_existing_cached_chart($CFG->dirroot . '/' . STATS_DIR . '/cache/partial.minor.versions.' . date('Ymd') . '.png');
$fullminorchartexists = check_for_existing_cached_chart($CFG->dirroot . '/' . STATS_DIR . '/cache/full.minor.versions.' . date('Ymd') . '.png');
if (!$partialminorchartexists || !$fullminorchartexists) {
// This is a VERY costly query... VERRRRRRRRY costly
// Only run this query is we NEED to generate
$versioninfo = gather_version_information(0, 2, 0);
// Last 2 months
$fullversioninfo = gather_version_information(99, 0, 0);
// Last 99 years
} else {
// Generate a dummy array we won't generate the graph anyway
$tempversion = array();
$tempversion['version'] = '2.0.0';
$tempversion['major'] = '2';
$tempversion['minor'] = '0';
$tempversion['release'] = '0';
$tempversion['count'] = 1;
/**
* Used to find the latest cached version of the chart to display
*
* Usually this will only be called should there be an error with CURL
* such that google charts didn't return an image, or couldn't be reached!
*
* @param string $filepath The directory where cached images exist
* @param string $filename The filename for the cached images
* @return string The new filename tp request
*/
function find_latest_cached_graph($filepath, $filename)
{
// First check if it already exists, saves us time if it does
$fileexists = check_for_existing_cached_chart($filepath . $filename);
if ($fileexists === true) {
return $filename;
}
// The cache directory doesn't exist we can't even proceed here
if (!file_exists($filepath) || !is_dir($filepath) || !is_readable($filepath)) {
return false;
}
// Open the directory for browsing
$dir = dir($filepath);
$possibilities = array();
// Build the regular expression to recognise similar files
$regexp = preg_replace('#\\.\\d{6,8}\\.png$#', '.(\\d){6,8}.png', $filename);
$regexp = '#' . preg_replace('#([\\+\\.\\-\\_\\#])#', '\\\\$1', $regexp) . '#';
// Recurse the directory
while (false !== ($file = $dir->read())) {
if ($file == '.' || $file == '..') {
continue;
}
// Check if each file is a matches the regexp
if (preg_match($regexp, $file) && is_file($filepath . $file)) {
$possibilities[] = $file;
}
}
// Sort the possibile files and then return the top one :)
if (count($possibilities) == 0) {
return $filename;
}
rsort($possibilities);
return $possibilities[0];
}
