first commit

system/library/db/pdo.php

@@ -0,0 +1,147 @@
+<?php
+namespace Opencart\System\Library\DB;
+/**
+ * Class PDO
+ *
+ * @package
+ */
+class PDO {
+	/**
+	 * @var object|\PDO|null
+	 */
+	private object|null $connection;
+	/**
+	 * @var array
+	 */
+	private array $data = [];
+	/**
+	 * @var int
+	 */
+	private int $affected;
+	
+	/**
+	 * Constructor
+	 *
+	 * @param    string  $hostname
+	 * @param    string  $username
+	 * @param    string  $password
+	 * @param    string  $database
+	 * @param    string  $port
+	 */
+	public function __construct(string $hostname, string $username, string $password, string $database, string $port = '') {
+		if (!$port) {
+			$port = '3306';
+		}
+
+		try {
+			$pdo = @new \PDO('mysql:host=' . $hostname . ';port=' . $port . ';dbname=' . $database . ';charset=utf8mb4', $username, $password, array(\PDO::ATTR_PERSISTENT => false, \PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8mb4 COLLATE utf8mb4_general_ci'));
+		} catch (\PDOException $e) {
+			throw new \Exception('Error: Could not make a database link using ' . $username . '@' . $hostname . '!');
+		}
+
+		if ($pdo) {
+			$this->connection = $pdo;
+
+			$this->query("SET SESSION sql_mode = 'NO_ZERO_IN_DATE,NO_ENGINE_SUBSTITUTION'");
+			$this->query("SET FOREIGN_KEY_CHECKS = 0");
+
+			// Sync PHP and DB time zones
+			$this->query("SET `time_zone` = '" . $this->escape(date('P')) . "'");
+		}
+	}
+	
+	/**
+	 * Query
+	 *
+	 * @param    string  $sql
+	 *
+	 * @return   bool|object
+	 */
+	public function query(string $sql): bool|object {
+		$sql = preg_replace('/(?:\'\:)([a-z0-9]*.)(?:\')/', ':$1', $sql);
+
+		$statement = $this->connection->prepare($sql);
+
+		try {
+			if ($statement && $statement->execute($this->data)) {
+				$this->data = [];
+
+				if ($statement->columnCount()) {
+					$data = $statement->fetchAll(\PDO::FETCH_ASSOC);
+
+					$result = new \stdClass();
+					$result->row = isset($data[0]) ? $data[0] : [];
+					$result->rows = $data;
+					$result->num_rows = count($data);
+					$this->affected = 0;
+
+					return $result;
+				} else {
+					$this->affected = $statement->rowCount();
+
+					return true;
+				}
+
+				$statement->closeCursor();
+			} else {
+				return true;
+			}
+		} catch (\PDOException $e) {
+			throw new \Exception('Error: ' . $e->getMessage() . ' <br/>Error Code : ' . $e->getCode() . ' <br/>' . $sql);
+		}
+
+		return false;
+	}
+
+	/**
+	 * Escape
+	 *
+	 * @param    string  value
+	 *
+	 * @return   string
+	 */
+	public function escape(string $value): string {
+		$key = ':' . count($this->data);
+
+		$this->data[$key] = $value;
+
+		return $key;
+	}
+
+	/**
+	 * countAffected
+	 *
+	 * @return   int
+	 */
+	public function countAffected(): int {
+		return $this->affected;
+	}
+
+	/**
+	 * getLastId
+	 *
+	 * @return   int
+	 */
+	public function getLastId(): int {
+		return $this->connection->lastInsertId();
+	}
+
+	/**
+	 * isConnected
+	 *
+	 * @return   bool
+	 */
+	public function isConnected(): bool {
+		return $this->connection;
+	}
+
+	/**
+	 * Destructor
+	 *
+	 * Closes the DB connection when this object is destroyed.
+	 *
+	 */
+	public function __destruct() {
+		$this->connection = null;
+	}
+}