add database directory

include/database/class_db.php

@@ -0,0 +1,104 @@
+<?php
+
+class DB
+{
+    private  DBInterface $driver;
+
+    private static $instance;
+
+    private static array $queries = [];
+
+    private function __construct()
+    {
+
+    }
+
+    private function __clone()
+    {
+
+    }
+
+    public function setDriver(DBInterface $driver)
+    {
+        $this->driver = $driver;
+
+        return $this;
+    }
+
+    public static function getInstance()
+    {
+        if (self::$instance) {
+            return self::$instance;
+        }
+        $instance = new self;
+        $driver = new DBMysqli();
+        $instance->setDriver($driver);
+        return self::$instance = $instance;
+    }
+
+
+    public function connect($host, $username, $password, $database, $port)
+    {
+        return $this->driver->connect($host, $username, $password, $database, $port);
+    }
+
+    public function query(string $sql)
+    {
+        try {
+            return $this->driver->query($sql);
+        } catch (\Exception $e) {
+            throw new \DatabaseException($sql, $e->getMessage());
+        }
+
+    }
+
+    public function error()
+    {
+        return $this->driver->error();
+    }
+
+    public function errno()
+    {
+        return $this->driver->errno();
+    }
+
+    public function numRows($result)
+    {
+        return $this->driver->numRows($result);
+    }
+
+    public function select_db($database)
+    {
+        return $this->driver->selectDb($database);
+    }
+
+    public function fetchAssoc($result)
+    {
+        return $this->driver->fetchAssoc($result);
+    }
+
+    public function fetchRow($result)
+    {
+        return $this->driver->fetchRow($result);
+    }
+
+    public function fetchArray($result, $type = null)
+    {
+        return $this->driver->fetchArray($result, $type);
+    }
+
+    public function affectedRows()
+    {
+        return $this->driver->affectedRows();
+    }
+
+    public function escapeString(string $string)
+    {
+        return $this->driver->escapeString($string);
+    }
+
+
+
+
+
+}

include/database/class_db_mysqli.php

@@ -0,0 +1,75 @@
+<?php
+
+class DBMysqli implements DBInterface
+{
+    private mysqli $mysqli;
+
+    public function connect($host, $username, $password, $database, $port)
+    {
+        $mysqli = new mysqli($host, $username, $password, $database, $port);
+        /* check connection */
+        if (mysqli_connect_errno()) {
+            throw new \RuntimeException(mysqli_connect_error());
+        }
+        /* activate reporting */
+        $driver = new mysqli_driver();
+        $driver->report_mode = MYSQLI_REPORT_ALL & ~MYSQLI_REPORT_INDEX;
+
+        return $this->mysqli = $mysqli;
+    }
+
+    public function query(string $sql)
+    {
+        return $this->mysqli->query($sql);
+    }
+
+    public function error(): string
+    {
+        return $this->mysqli->error;
+    }
+
+    public function errno(): int
+    {
+        return $this->mysqli->errno;
+    }
+
+    public function numRows($mysqliResult): int
+    {
+        return $mysqliResult->num_rows;
+    }
+
+    public function selectDb($database)
+    {
+        return $this->mysqli->select_db($database);
+    }
+
+    public function fetchAssoc($mysqliResult): array|null
+    {
+        return $mysqliResult->fetch_assoc();
+    }
+
+    public function fetchRow($mysqliResult): array|null
+    {
+        return $mysqliResult->fetch_row();
+    }
+
+    public function fetchArray($mysqliResult, $type): array|null
+    {
+        if (is_null($type)) {
+            $type = MYSQLI_BOTH;
+        }
+        return $mysqliResult->fetch_array($type);
+    }
+
+    public function affectedRows(): int
+    {
+        return $this->mysqli->affected_rows;
+    }
+
+    public function escapeString(string $string): string
+    {
+        return $this->mysqli->real_escape_string($string);
+    }
+
+
+}

include/database/class_exception.php

@@ -0,0 +1,11 @@
+<?php
+
+class DatabaseException extends \Exception
+{
+
+    public function __construct($query, $message)
+    {
+        parent::__construct("$message [$query]");
+    }
+
+}

include/database/helpers.php

@@ -0,0 +1,57 @@
+<?php
+
+function mysql_connect($host, $username, $password, $database, $port)
+{
+    return DB::getInstance()->connect($host, $username, $password, $database, $port);
+}
+
+function mysql_errno()
+{
+    return DB::getInstance()->errno();
+}
+
+function mysql_error()
+{
+    return DB::getInstance()->error();
+}
+
+function mysql_query(string $sql)
+{
+    return DB::getInstance()->query($sql);
+}
+
+function mysql_select_db($database)
+{
+    return DB::getInstance()->select_db($database);
+}
+
+function mysql_num_rows($result)
+{
+    return DB::getInstance()->numRows($result);
+}
+
+function mysql_fetch_array($result, $type = null)
+{
+    return DB::getInstance()->fetchArray($result, $type);
+}
+
+function mysql_fetch_assoc($result)
+{
+    return DB::getInstance()->fetchAssoc($result);
+}
+
+function mysql_fetch_row($result)
+{
+    return DB::getInstance()->fetchRow($result);
+}
+
+function mysql_affected_rows()
+{
+    return DB::getInstance()->affectedRows();
+}
+
+function mysql_real_escape_string($string)
+{
+    return DB::getInstance()->escapeString($string);
+}
+

include/database/interface_db.php

@@ -0,0 +1,27 @@
+<?php
+
+interface DBInterface
+{
+    public function connect($host, $username, $password, $database, $port);
+
+    public function query(string $sql);
+
+    public function error(): string;
+
+    public function errno(): int;
+
+    public function numRows($result): int;
+
+    public function selectDb($database);
+
+    public function fetchAssoc($result): array|null;
+
+    public function fetchRow($result): array|null;
+
+    public function fetchArray($result, $type): array|null;
+
+    public function affectedRows(): int;
+
+    public function escapeString(string $string): string;
+
+}