Добавлен класс DatabaseConfig

app/library/Database.php

@@ -1,15 +1,19 @@
 <?php
 namespace App\Library;
 
+use App\Library\DatabaseConfig;
 use PDOException;
 use PDO;
-class Database extends PDO
+class Database
 {
-    public function __construct(string $dsn, string $username, string $password)
+    private PDO $pdo;
+    public function __construct(DatabaseConfig $config)
     {
         try {
-            $dsn .= ";charset=utf8";
-            parent::__construct(
+            $dsn = $config->getDsn();
+            $username = $config->getUsername();
+            $password = $config->getPassword();
+            $this->pdo = new PDO(
                 $dsn, 
                 $username, 
                 $password, 
@@ -26,12 +30,13 @@ class Database extends PDO
         echo "Подключение прервано!\n";
     }
     
-    public function executeQuery(string $sql, array $params) : array|bool
+    public function executeQuery(string $sql, array $params) : array|null
     {
         try {
-            $stmt = $this->prepare($sql);
+            $stmt = $this->pdo->prepare($sql);
+            $params = array_values($params);
             for ($i = 0; $i < count($params); $i++) { 
-                $stmt->bindParam(":v".$i+1, $params[$i]);
+                $stmt->bindParam(":v".$i++, $params[$i]);
             }
             $stmt->execute();
             $array = $stmt->fetchAll(PDO::FETCH_ASSOC);