本文整理汇总了PHP中moodle_database::get_dbfamily方法的典型用法代码示例。如果您正苦于以下问题：PHP moodle_database::get_dbfamily方法的具体用法？PHP moodle_database::get_dbfamily怎么用？PHP moodle_database::get_dbfamily使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类moodle_database的用法示例。
在下文中一共展示了moodle_database::get_dbfamily方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的PHP代码示例。
示例1: handler_write
/**
* Write session handler.
*
* {@see http://php.net/manual/en/function.session-set-save-handler.php}
*
* NOTE: Do not write to output or throw any exceptions!
* Hopefully the next page is going to display nice error or it recovers...
*
* @param string $sid
* @param string $session_data
* @return bool success
*/
public function handler_write($sid, $session_data)
{
global $USER;
// TODO: MDL-20625 we need to rollback all active transactions and log error if any open needed
if ($this->failed) {
// do not write anything back - we failed to start the session properly
return false;
}
$userid = 0;
if (!empty($USER->realuser)) {
$userid = $USER->realuser;
} else {
if (!empty($USER->id)) {
$userid = $USER->id;
}
}
if (isset($this->record->id)) {
$data = base64_encode($session_data);
// There might be some binary mess :-(
// Skip db update if nothing changed,
// do not update the timemodified each second.
$hash = sha1($data);
if ($this->lasthash === $hash and $this->record->userid == $userid and time() - $this->record->timemodified < 20 and $this->record->lastip == getremoteaddr()) {
// No need to update anything!
return true;
}
$this->record->sessdata = $data;
$this->record->userid = $userid;
$this->record->timemodified = time();
$this->record->lastip = getremoteaddr();
try {
$this->database->update_record_raw('sessions', $this->record);
$this->lasthash = $hash;
} catch (dml_exception $ex) {
if ($this->database->get_dbfamily() === 'mysql') {
try {
$this->database->set_field('sessions', 'state', 9, array('id' => $this->record->id));
} catch (Exception $ignored) {
}
error_log('Can not write database session - please verify max_allowed_packet is at least 4M!');
} else {
error_log('Can not write database session');
}
return false;
} catch (Exception $ex) {
error_log('Can not write database session');
return false;
}
} else {
// fresh new session
try {
$record = new stdClass();
$record->state = 0;
$record->sid = $sid;
$record->sessdata = base64_encode($session_data);
// there might be some binary mess :-(
$record->userid = $userid;
$record->timecreated = $record->timemodified = time();
$record->firstip = $record->lastip = getremoteaddr();
$record->id = $this->database->insert_record_raw('sessions', $record);
$this->record = $this->database->get_record('sessions', array('id' => $record->id));
$this->lasthash = sha1($record->sessdata);
$this->database->get_session_lock($this->record->id, SESSION_ACQUIRE_LOCK_TIMEOUT);
} catch (Exception $ex) {
// this should not happen
error_log('Can not write new database session or acquire session lock');
$this->failed = true;
return false;
}
}
return true;
}示例2: is_available
/**
* Is available.
* @return boolean - True if this lock type is available in this environment.
*/
public function is_available()
{
return $this->db->get_dbfamily() === 'postgres';
}