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111 lines
2.8 KiB
111 lines
2.8 KiB
<?php
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/**
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* Класс базы данных.
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* Возвращает идентификатор соединения
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*
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* @copyright
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* @link
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* @package Majestic
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* @subpackage DB
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* @since
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* @version SVN: $Id$
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* @filesource $URL$
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*/
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class DBConnector
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{
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static private $handlers = array();
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static public $queries = array();
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/**
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* Запрещаем new и клонирование
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*/
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private function __construct(){}
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private function __clone(){}
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/**
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* Получение соединения.
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* Если соединение с такими параметрами уже есть - новое не создается.
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*
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* @param array $db_settings - массив настроек
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* @return resource - идентификатор соединения
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*/
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static public function getConnect($db_settings)
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{
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$handler_name = self::getConnectionName($db_settings);
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if (isset(self::$handlers[$handler_name])) {
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return self::$handlers[$handler_name];
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}
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if (!$handler = mysqli_connect($db_settings['host'], $db_settings['user'], $db_settings['password'], $db_settings['database'])) {
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throw new MJException('Can\'t connect to DB '.mysqli_connect_error(), 2);
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}
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self::query($handler, "SET NAMES 'utf8'"); //cheat!!!
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return self::$handlers[$handler_name] = $handler;
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}
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static protected function getConnectionName($db_settings)
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{
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return $db_settings['host'] . '-' . $db_settings['database'];
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}
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/////////
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static public function query($handler, $sql)
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{
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return mysqli_query($handler, $sql);
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}
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static public function escape($handler, $str)
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{
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return mysqli_real_escape_string($handler, $str);
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}
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static public function error($handler)
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{
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return mysqli_error($handler);
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}
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static public function free($result)
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{
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return mysqli_free_result($result);
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}
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static public function fetchObject($result, $class_name = false)
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{
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return $class_name ? mysqli_fetch_object($result, $class_name) : mysqli_fetch_object($result);
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}
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static public function numRows($result)
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{
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return mysqli_num_rows($result);
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}
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static public function affectedRows($handler)
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{
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return mysqli_affected_rows($handler);
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}
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static public function getId($handler)
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{
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return mysqli_insert_id($handler);
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}
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static public function autocommit($handler, $switch)
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{
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return mysqli_autocommit($handler, (bool) $switch);
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}
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static public function commit($handler)
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{
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return mysqli_commit($handler);
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}
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static public function rollback($handler)
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{
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return mysqli_rollback($handler);
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}
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}
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?>
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