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system/library/db.php

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+<?php
+/**
+ * @package        OpenCart
+ * @author         Daniel Kerr
+ * @copyright      Copyright (c) 2005 - 2022, OpenCart, Ltd. (https://www.opencart.com/)
+ * @license        https://opensource.org/licenses/GPL-3.0
+ * @link           https://www.opencart.com
+ */
+namespace Opencart\System\Library;
+/**
+ * Class DB Adapter
+ */
+class DB {
+	/**
+	 * @var object|mixed
+	 */
+	private object $adaptor;
+
+	/**
+	 * Constructor
+	 *
+	 * @param string $adaptor
+	 * @param string $hostname
+	 * @param string $username
+	 * @param string $password
+	 * @param string $database
+	 * @param int    $port
+	 *
+	 */
+	public function __construct(string $adaptor, string $hostname, string $username, string $password, string $database, string $port = '') {
+		$class = 'Opencart\System\Library\DB\\' . $adaptor;
+
+		if (class_exists($class)) {
+			$this->adaptor = new $class($hostname, $username, $password, $database, $port);
+		} else {
+			throw new \Exception('Error: Could not load database adaptor ' . $adaptor . '!');
+		}
+	}
+
+	/**
+	 * Query
+	 *
+	 * @param string $sql SQL statement to be executed
+	 *
+	 * @return    array
+	 */
+	public function query(string $sql): bool|object {
+		return $this->adaptor->query($sql);
+	}
+
+	/**
+	 * Escape
+	 *
+	 * @param string $value Value to be protected against SQL injections
+	 *
+	 * @return    string    returns escaped value
+	 */
+	public function escape(string $value): string {
+		return $this->adaptor->escape($value);
+	}
+
+	/**
+	 * Count Affected
+	 *
+	 * Gets the total number of affected rows from the last query
+	 *
+	 * @return    int    returns the total number of affected rows.
+	 */
+	public function countAffected(): int {
+		return $this->adaptor->countAffected();
+	}
+
+	/**
+	 * Get Last ID
+	 *
+	 * Get the last ID gets the primary key that was returned after creating a row in a table.
+	 *
+	 * @return    int returns last ID
+	 */
+	public function getLastId(): int {
+		return $this->adaptor->getLastId();
+	}
+
+	/**
+	 * Is Connected
+	 *
+	 * Checks if a DB connection is active.
+	 *
+	 * @return    bool
+	 */
+	public function isConnected(): bool {
+		return $this->adaptor->isConnected();
+	}
+}