fix code

php/.editorconfig

@@ -0,0 +1,10 @@
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = crlf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true

php/.gitignore

@@ -0,0 +1,3 @@
+vendor
+.idea
+src/config.php

php/composer.json

@@ -0,0 +1,15 @@
+{
+    "name": "denis/testtask",
+    "autoload": {
+        "psr-4": {
+            "": "src/"
+        }
+    },
+    "authors": [
+        {
+            "name": "Denis Oleshkevich",
+            "email": "denis@oleshkevich.ru"
+        }
+    ],
+    "require": {}
+}

php/src/Db/PdoConnection.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace Db;
+
+use PDO;
+
+class PdoConnection
+{
+
+    private static ?PDO $pdoInstance = null;
+
+    private const CONFIG_FILE = "config.php";
+
+    private static function loadConfig($configFile)
+    {
+        if (!is_readable($configFile)) {
+            throw new \Exception(sprintf('Config file %s is not found', $configFile));
+        }
+        return include_once($configFile);
+    }
+
+
+    public static function init($configFile)
+    {
+        $config = self::loadConfig($configFile);
+
+        self::$pdoInstance = new PDO($config['dsn'], $config['user'], $config['password']);
+
+        self::$pdoInstance->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
+    }
+
+    /**
+     * Реализация singleton
+     * @return PDO
+     */
+    //ну это не синглтон, а хранение экземляра PDO. синглтон хранит экзепляпляр на тот же класс - на Gateway/User в нашем случае
+    public static function getPdoInstance(): PDO
+    {
+        if (is_null(self::$pdoInstance)) {
+            throw new \Exception("Use init() at first call");
+        }
+
+        return self::$pdoInstance;
+    }
+}

php/src/Manager/UserManager.php

@@ -0,0 +1,62 @@
+<?php
+
+namespace Manager;
+
+use Model\UserModel;
+
+final class UserManager
+{
+
+    const MAX_NAMES_FOR_FILTERING = 100;
+
+    /**
+     * Возвращает пользователей старше заданного возраста.
+     * @param int $ageFrom
+     * @return array
+     */
+    function filterUsersFromAge(int $ageFrom): array
+    {
+        return UserModel::filterUsersFromAge($ageFrom);
+    }
+
+    /**
+     * Возвращает пользователей по списку имен.
+     * @return array
+     */
+    public static function filterByNames(): array
+    {
+        if (!array_key_exists('names', $_GET)) {
+            return [];
+        }
+
+        $names = $_GET['names'];
+
+        $names = array_slice($names, 0, self::MAX_NAMES_FOR_FILTERING);
+
+        return UserModel::filterByNames($names);
+    }
+
+    /**
+     * Добавляет пользователей в базу данных.
+     * @param $users
+     * @return array
+     */
+    public function addUsers($users): array
+    {
+        $ids = [];
+
+        try {
+            UserModel::getPdoInstance()->beginTransaction();
+            foreach ($users as $user) {
+                $ids[] = UserModel::add($user['name'], $user['lastName'], $user['age']);
+            }
+            UserModel::getPdoInstance()->commit();
+        } catch (\Exception $e) {
+            UserModel::getPdoInstance()->rollBack();
+
+            throw $e;
+        }
+
+        return $ids;
+    }
+}

php/src/Model/Model.php

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+<?php
+
+namespace Model;
+
+use Db\PdoConnection;
+
+class Model
+{
+
+    public static function getPdoInstance(): \PDO
+    {
+        return PdoConnection::getPdoInstance();
+    }
+}