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<?php
/**
* \brief This class contains Database Connection details
* \n Features:
* \li Create Database Object
* \li Get Database Object
* \li Close Connection
* \n
* \author Jayshri Kinge
* \version 1.0
* \date 04/03/2015
* \note (C) 2015 Fermion Infotech Private Limited. All rights reserved. (info@fermion.in)
*/
final class DbConn{
private static $connections = array(); /**< Array $connections contains Array */
/**
* _construct don't permit an explicit call of the constructor! (like $v = new Singleton())
*/
private function __construct()
{ }
/**
* _clone don't permit cloning the singleton (like $x = clone $v)
*/
private function __clone() { }
/**
* getDBObject gets connection object to create link with database
* @param Array $database contains the details of the database
* <p> This function checks that already connected with database or not, otherwise calls createDBObject method to create connection</p>
* @return Connection Object.
*/
public static function getDBObject($database){
if(empty(self::$connections[$database])){
self::$connections[$database] = self::createDBObject($database);
mysqli_set_charset(self::$connections[$database], 'utf8');
}
return self::$connections[$database];
}
public static function setTimeZone($timezone, $database) {
$query = 'SET time_zone = \'' . $timezone . '\'';
self::$connections[$database]->query($query);
}
/**
* createDBObject creates connection object to create link with database
* @param Array $database contains the details of the database
* <p> This function create connection with database by using mysqli method</p>
* @return Connection Object if successfully connected.
*/
private static function createDBObject($database) {
global $databases;
try {
return new mysqli($databases[$database]['host'], $databases[$database]['user'], $databases[$database]['password'], $databases[$database]['database']);
//return new mysqli($databases['2']['host'], $databases['2']['user'], $databases['2']['password'], $databases['2']['database']);
}
catch (Exception $err){
$sysErr = 'Message: ' .$err->getMessage();
$custErr = 'Error in file: '.__FILE__.', Line: '.__LINE__;
error_log($sysErr . "\n" . $custErr);
}
}
/**
* closeConnections closes database connection
* @param : No parameters
* <p> This function closes database connection</p>
* @return void
*/
public static function closeConnections() {
try {
foreach(self::$connections as $connection) {
try {
$connection->close();
} catch(Exception $closeErr) {}
}
self::$connections = null;
} catch(Exception $err) {
echo $err->getMessage();
}
}
}
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