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<?php
/** Shranjujemo nastavitve ankete. Za vsako anketo unikatno.
*
* @author veselicg
*
*/
/** Ker za statičen klas ne moremo narediti destructor funkcije,
* si pomagamo s lastno destruktor instanco,
* katera pokliče destruct funkcijo našega statičnega razreda
*
* @author veselicg
*
*/
class SurveySessionDestructor
{
/** pokličemo destruktor funkcijo
*
*/
public function __destruct()
{
SurveySession::destruct();
}
}
class SurveySession {
private static $destructorInstance;
private static $anketa = null;
private static $data = array();
private static $updated = false;
static function sessionStart($anketa = null) {
if (null === self::$destructorInstance)
self::$destructorInstance = new SurveySessionDestructor();
if ($anketa == null || (int)$anketa == 0 || !is_numeric($anketa))
{
throw new Exception('Survey ID is mandatory for SurveySession!');
}
self::$anketa = $anketa;
# preberemo vse nastavitve za to anketo
$sql = sisplet_query("SELECT what,value FROM srv_survey_session WHERE ank_id='".self::$anketa."'");
while (list($what,$value) = mysqli_fetch_row($sql))
{
self::$data[$what] = unserialize($value);
}
}
static function get($what=null) {
if (self::$anketa == null)
{
throw new Exception('Survey ID is mandatory for SurveySession!');
return null;
}
if ($what == null)
{
return self::$data;
}
else if (isset(self::$data[$what]))
{
return self::$data[$what];
}
else
{
return null;
}
return null;
}
static function set($what,$value) {
if (self::$anketa == null)
{
throw new Exception('Survey ID is mandatory for SurveySession!');
return null;
}
if ($what == null)
{
throw new Exception('Variable \'what\' is mandatory for SurveySession!');
return null;
}
if (!is_string($what))
{
throw new Exception('Variable \'what\' must be string!');
return null;
}
# če je vse ok setiramo vrednost
self::$data[$what] = $value;
self::$updated = true;
return true;
}
static public function remove($what)
{
if (self::$anketa == null)
{
throw new Exception('Survey ID is mandatory for SurveySession!');
return null;
}
if ($what == null)
{
throw new Exception('Variable \'what\' is mandatory for remove()!');
return null;
}
if (!is_string($what))
{
throw new Exception('Variable \'what\' must be string!');
return null;
}
if (isset(self::$data[$what])) {
unset (self::$data[$what]);
#pobrišemo še iz baze
$deleteString = "DELETE FROM srv_survey_session WHERE ank_id = '".self::$anketa."' AND what='$what'";
$query = sisplet_query($deleteString);
self::$updated = true;
}
return null;
}
/** ob ukinitvi klassa shranimo vse vrednosti
*
*/
static public function destruct()
{
if (self::$anketa == null)
{
throw new Exception('Survey ID is mandatory for SurveySession!');
return null;
}
// v destructu več nimamo connect_db resoursa
global $connect_db;
if ($connect_db == null) {
// poizkusimo še 1x
global $mysql_server, $mysql_username, $mysql_password, $mysql_database_name;
if (!$connect_db = mysqli_connect($mysql_server, $mysql_username, $mysql_password, $mysql_database_name)) {
die ('Please try again later [ERR: DB])');
}
}
# pripravimo string za shranjevanje
if (count(self::$data) > 0 && self::$updated) {
$insertStringArray = array();
foreach (self::$data AS $what => $value) {
$insertStringArray[] = "('".self::$anketa."', '".$what."', '".serialize($value)."')";
}
$insertString = "INSERT INTO srv_survey_session (ank_id,what,value) VALUES ".implode(', ',$insertStringArray);
$insertString .=" ON DUPLICATE KEY UPDATE value = VALUES(value)";
$query = sisplet_query($insertString, $connect_db);
}
}
static function append($where,$what,$value)
{
if (self::$anketa == null)
{
throw new Exception('Survey ID is mandatory for SurveySession!');
return null;
}
if ($what == null)
{
throw new Exception('Variable \'what\' is mandatory for remove()!');
return null;
}
if (!is_string($what))
{
throw new Exception('Variable \'what\' must be string!');
return null;
}
self::$updated = true;
self::$data[$where][$what] = $value;
}
}
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