diff --git a/05_react/unterricht/tag54/react-app/src/components/tables/TableProducts.jsx b/05_react/unterricht/tag54/react-app/src/components/tables/TableProducts.jsx
index ce45344..2d6468a 100644
--- a/05_react/unterricht/tag54/react-app/src/components/tables/TableProducts.jsx
+++ b/05_react/unterricht/tag54/react-app/src/components/tables/TableProducts.jsx
@@ -4,7 +4,19 @@ import RowProduct from './content/RowProduct';
 // Reducer (bei größerer Applikaitonsstuktur ausgelagert)
 const initialState = (props) => {
   // Validierung und Error Checks
-  return { items: props.items || [] };
+  items.filter((item) => !Object.hasOwn(item, _id));
+
+  return {
+    items: props.items || [
+      {
+        _id: '1',
+        title: 'Example Product 1',
+        sku: 'ABC1234',
+        stock: 2,
+        price: 15.2,
+      },
+    ],
+  };
 };
 
 const reducer = (state, action) => {
@@ -65,9 +77,9 @@ const TableProducts = (props) => {
   const handleAmount = useCallback((amount, id) => {
     dispatch({ type: 'UPDATE_AMOUNT', payload: { amount, id } });
 
-    // setItems((prevItems) => {
-    //   return prevItems.map((item) => (item._id === id ? { ...item, stock: amount } : item));
-    // });
+    setItems((prevItems) => {
+      return prevItems.map((item) => (item._id === id ? { ...item, stock: amount } : item));
+    });
   }, []);
 
   const handlePrice = useCallback((price, id) => {
diff --git a/webseite-react-php/react-app/package-lock.json b/webseite-react-php/react-app/package-lock.json
index 835011f..e128cc6 100644
--- a/webseite-react-php/react-app/package-lock.json
+++ b/webseite-react-php/react-app/package-lock.json
@@ -14,7 +14,7 @@
         "react": "^19.2.8",
         "react-dom": "^19.2.8",
         "react-icons": "^5.7.0",
-        "react-router-dom": "^7.18.2"
+        "react-router-dom": "^7.18.3"
       },
       "devDependencies": {
         "@types/react": "^19.2.18",
@@ -1963,9 +1963,9 @@
       }
     },
     "node_modules/react-router": {
-      "version": "7.18.2",
-      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.18.2.tgz",
-      "integrity": "sha512-aUVMjFm3GAPTTZL7oYr5E7ETiqfQCHRLH+B+5afnICvf0r7kkK4eR6SMuwbSTJw/7t+12khT/Kahij49fqOCIg==",
+      "version": "7.18.3",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.18.3.tgz",
+      "integrity": "sha512-gyXgtdr5uACJ5b1Q4udzjVV+tb/rlHIMJKuJ0e89R4Kzgz47z/rgP0dIKxktqIEUhDHluGTPJJH/wRha7CyqsA==",
       "license": "MIT",
       "dependencies": {
         "cookie": "^1.0.1",
@@ -1985,12 +1985,12 @@
       }
     },
     "node_modules/react-router-dom": {
-      "version": "7.18.2",
-      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-7.18.2.tgz",
-      "integrity": "sha512-AIKJ/jgGlFb3EbfCXk5Gzshiwt+l3mqbCrNjmEWMMjqQxNJ3svBa6bgzFyCC2Sw3RA0VWF1kg3uQf2OFhxb8hw==",
+      "version": "7.18.3",
+      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-7.18.3.tgz",
+      "integrity": "sha512-ytVbyBBM7vMfRCam25r0WMhSVSom909A8p+8m0/f1w853dz/xfFu6etAT2SEbVoSnI+ZoPRDqIsQXVT89gp7kg==",
       "license": "MIT",
       "dependencies": {
-        "react-router": "7.18.2"
+        "react-router": "7.18.3"
       },
       "engines": {
         "node": ">=20.0.0"
diff --git a/webseite-react-php/react-app/package.json b/webseite-react-php/react-app/package.json
index c239027..ad25101 100644
--- a/webseite-react-php/react-app/package.json
+++ b/webseite-react-php/react-app/package.json
@@ -16,7 +16,7 @@
     "react": "^19.2.8",
     "react-dom": "^19.2.8",
     "react-icons": "^5.7.0",
-    "react-router-dom": "^7.18.2"
+    "react-router-dom": "^7.18.3"
   },
   "devDependencies": {
     "@types/react": "^19.2.18",
diff --git a/webseite-react-php/react-app/src/components/tables/TableProducts.jsx b/webseite-react-php/react-app/src/components/tables/TableProducts.jsx
index 355bbfe..1457e0f 100644
--- a/webseite-react-php/react-app/src/components/tables/TableProducts.jsx
+++ b/webseite-react-php/react-app/src/components/tables/TableProducts.jsx
@@ -3,8 +3,9 @@ import RowProduct from './content/RowProduct';
 import { ProductsProvider, useProductsState } from '../../stores/products';
 
 const TableProductsView = (props) => {
-  const { items } = useProductsState();
-  // const dispatch = useProductsDispatch()
+  const { items } = useProductsState(); // const {items} = useContext(ProductsStateContext);
+
+  // const dispatch = useProductsDispatch() // const dispatch = useContext(ProductsDispatchContext);
 
   //const [{ items }, dispatch] = useReducer(reducer, initialState(props));
 
diff --git a/webseite-react-php/react-app/src/components/tables/content/RowProduct.jsx b/webseite-react-php/react-app/src/components/tables/content/RowProduct.jsx
index 5d05fa6..6773b2e 100644
--- a/webseite-react-php/react-app/src/components/tables/content/RowProduct.jsx
+++ b/webseite-react-php/react-app/src/components/tables/content/RowProduct.jsx
@@ -1,7 +1,8 @@
 import { memo, useCallback } from 'react';
 import { useProductsActions } from '../../../stores/products'; // /index.js muss nicht angegeben werden (wg. Bundler)
+
 // import { useProductsDispatch } from '../../../stores/products';
-// import { PRODUCTS_ACTIONS } from '../../../stores/products';
+//import { PRODUCTS_ACTIONS } from '../../../stores/products';
 
 import InputAmount from '../../inputs/InputAmount';
 import InputPrice from '../../inputs/InputPrice';
@@ -11,7 +12,7 @@ const RowProduct = (props) => {
   //const { sku = '', title = '' } = props;
 
   const { updateAmount, updatePrice } = useProductsActions();
-  // const dispatch = useProductsDispatch();
+  // const dispatch = useProductsDispatch(); // const dispatch = useContext(ProductsDispatchContext)
 
   // Eventhandler
   // const handleAmount = useCallback((val) => {
@@ -23,6 +24,7 @@ const RowProduct = (props) => {
   const handleAmount = useCallback(
     (val) => {
       updateAmount(val, _id);
+      // dispatch({type: PRODUCTS_ACTIONS.UPDATE_AMOUNT, payload: {amount: val, id: _id}})
     },
     [updateAmount, _id],
   );
diff --git a/webseite-react-php/react-app/src/stores/products/ProductsStore.jsx b/webseite-react-php/react-app/src/stores/products/ProductsStore.jsx
index 9f14457..5850318 100644
--- a/webseite-react-php/react-app/src/stores/products/ProductsStore.jsx
+++ b/webseite-react-php/react-app/src/stores/products/ProductsStore.jsx
@@ -44,6 +44,7 @@ export const useProductsDispatch = () => {
   return dispatch;
 };
 
+// Factory Function
 export const useProductsActions = () => {
   const dispatch = useProductsDispatch();
 
diff --git a/webseite-react-php/slim-php/.env.example b/webseite-react-php/slim-php/.env.example
new file mode 100644
index 0000000..1a84663
--- /dev/null
+++ b/webseite-react-php/slim-php/.env.example
@@ -0,0 +1,6 @@
+DB_HOST=127.0.0.1
+DB_PORT=8889
+DB_NAME=nerdshop
+DB_USER=root
+DB_PASS=root
+CORS_ORIGIN=http://localhost:5173
diff --git a/webseite-react-php/slim-php/.gitignore b/webseite-react-php/slim-php/.gitignore
new file mode 100644
index 0000000..3d5163b
--- /dev/null
+++ b/webseite-react-php/slim-php/.gitignore
@@ -0,0 +1,2 @@
+/vendor/
+.env
diff --git a/webseite-react-php/slim-php/INSTALLATION.md b/webseite-react-php/slim-php/INSTALLATION.md
new file mode 100644
index 0000000..51fd94d
--- /dev/null
+++ b/webseite-react-php/slim-php/INSTALLATION.md
@@ -0,0 +1,100 @@
+## MacOS Installation
+
+Um die PHP-Version und Composer aus MAMP standardmäßig in deinem Terminal über die `~/.bashrc` zu nutzen, fügst du den Pfad zur gewünschten PHP-Version deinem `$PATH` voran.
+
+**1. MAMP PHP-Version ermitteln**
+Prüfe im Finder unter `/Applications/MAMP/bin/php/`, welche Versionen installiert sind (z. B. `php8.2.0`).
+
+**2. `.bashrc` bearbeiten**
+Öffne die Datei im Editor:
+
+```bash
+nano ~/.bashrc
+
+```
+
+Füge am Ende folgende Zeilen ein (ersetze `php8.2.0` durch deine tatsächliche Version):
+
+```bash
+# MAMP PHP zum PATH hinzufügen
+export PATH="/Applications/MAMP/bin/php/php8.2.0/bin:$PATH"
+
+# Falls Composer separat als .phar oder Skript liegt, optional ein Alias setzen:
+# alias composer="/Applications/MAMP/bin/php/php8.2.0/bin/php /usr/local/bin/composer"
+
+```
+
+**3. Änderungen anwenden**
+Lade die Konfiguration neu:
+
+```bash
+source ~/.bashrc
+
+```
+
+**4. Überprüfen**
+Teste, ob die Pfade korrekt geladen werden:
+
+```bash
+which php
+php -v
+composer -v
+
+```
+
+> **Hinweis für macOS:** Standardmäßig nutzt das Terminal unter macOS seit macOS Catalina `zsh` statt `bash`. Falls deine Änderungen nach einem Terminal-Neustart nicht greifen, trage die gleichen Zeilen stattdessen in deine `~/.zshrc` ein.
+
+
+## Windows Installation
+
+Unter Windows nutzt du für Bash in der Regel **Git Bash** oder **WSL**. In Git Bash entspricht `~/.bashrc` der Datei `C:\Users\<DeinBenutzer>\.bashrc`.
+
+**1. MAMP PHP-Version ermitteln**
+Prüfe unter `C:\MAMP\bin\php\`, welche PHP-Version installiert ist (z. B. `php8.2.0`).
+
+**2. `.bashrc` in Git Bash anpassen**
+Öffne die Datei in Git Bash:
+
+```bash
+code ~/.bashrc
+
+```****
+
+Füge folgende Zeilen ein (Pfad an deine PHP-Version anpassen):
+
+```bash
+# MAMP PHP zum PATH hinzufügen (Windows-Pfad im POSIX-Format)
+export PATH="/c/MAMP/bin/php/php8.2.0:$PATH"
+
+# Composer Alias (falls composer.phar im MAMP-Verzeichnis oder Benutzerverzeichnis liegt)
+alias composer="/c/MAMP/bin/php/php8.2.0/php.exe /c/ProgramData/ComposerSetup/bin/composer.phar"
+
+```
+
+> Falls Composer als Windows-Batch-Datei (`composer.bat`) installiert ist, reicht bereits der PHP-Eintrag im `PATH`, da Git Bash installierte Windows-Programme direkt aufrufen kann.
+
+**3. Änderungen anwenden**
+
+```bash
+source ~/.bashrc
+
+```
+
+**4. Überprüfen**
+
+```bash
+which php
+php -v
+composer --version
+
+```
+
+---
+
+**Alternative: Systemweit für CMD / PowerShell setzen**
+Falls du PHP auch in der Windows Eingabeaufforderung oder PowerShell nutzen möchtest:
+
+1. `Win + R` drücken, `sysdm.cpl` eingeben und Enter drücken.
+2. Reiter **Erweitert** → **Umgebungsvariablen**.
+3. Unter **Systemvariablen** (oder **Benutzervariablen**) die Variable `Path` auswählen und auf **Bearbeiten** klicken.
+4. Neuen Eintrag hinzufügen: `C:\MAMP\bin\php\php8.2.0` und ganz nach oben schieben.
\ No newline at end of file
diff --git a/webseite-react-php/slim-php/README.md b/webseite-react-php/slim-php/README.md
new file mode 100644
index 0000000..4cd0d80
--- /dev/null
+++ b/webseite-react-php/slim-php/README.md
@@ -0,0 +1,28 @@
+Die MySQL-Datenbank und die Slim-REST-API sind eingerichtet und getestet.
+
+**Datenbank `nerdshop`** (MAMP, Port 8889) enthält die Tabelle `products` mit den 13 Einträgen aus der JSON-Datei. Die Mongo-IDs bleiben als `id` erhalten; die API liefert sie als `_id`, damit die React-App kompatibel bleibt.
+
+**API läuft auf** [http://localhost:8080](http://localhost:8080)
+
+| Methode  | URL              | Status        |
+| -------- | ---------------- | ------------- |
+| `GET`    | `/products`      | alle Produkte |
+| `GET`    | `/products/{id}` | ein Produkt   |
+| `POST`   | `/products`      | anlegen       |
+| `PUT`    | `/products/{id}` | aktualisieren |
+| `DELETE` | `/products/{id}` | löschen       |
+
+CORS ist für `http://localhost:5173` (Vite) gesetzt. In der React-App reicht später:
+
+```js
+fetch('http://localhost:8080/products');
+```
+
+Server neu starten:
+
+```bash
+cd slim-php-framework
+php -S localhost:8080 -t public public/router.php
+```
+
+Falls MAMP andere Zugangsdaten nutzt, stehen sie in `slim-php-framework/.env`.
diff --git a/webseite-react-php/slim-php/composer.json b/webseite-react-php/slim-php/composer.json
new file mode 100644
index 0000000..f96b062
--- /dev/null
+++ b/webseite-react-php/slim-php/composer.json
@@ -0,0 +1,22 @@
+{
+  "name": "nerdshop/slim-api",
+  "version": "1.0.0",
+  "description": "Nerdshop REST API",
+  "require": {
+    "php": "^8.1",
+    "ext-pdo": "*",
+    "ext-pdo_mysql": "*",
+    "php-di/php-di": "^7.0",
+    "slim/psr7": "^1.7",
+    "slim/slim": "^4.14",
+    "vlucas/phpdotenv": "^5.6"
+  },
+  "autoload": {
+    "psr-4": {
+      "App\\": "src/"
+    }
+  },
+  "config": {
+    "sort-packages": true
+  }
+}
diff --git a/webseite-react-php/slim-php/composer.lock b/webseite-react-php/slim-php/composer.lock
new file mode 100644
index 0000000..a33747f
--- /dev/null
+++ b/webseite-react-php/slim-php/composer.lock
@@ -0,0 +1,1354 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "b8704e63b45921414a48d118ce382b57",
+    "packages": [
+        {
+            "name": "fig/http-message-util",
+            "version": "1.1.5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-message-util.git",
+                "reference": "9d94dc0154230ac39e5bf89398b324a86f63f765"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-message-util/zipball/9d94dc0154230ac39e5bf89398b324a86f63f765",
+                "reference": "9d94dc0154230ac39e5bf89398b324a86f63f765",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3 || ^7.0 || ^8.0"
+            },
+            "suggest": {
+                "psr/http-message": "The package containing the PSR-7 interfaces"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.1.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Fig\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "Utility classes and constants for use with PSR-7 (psr/http-message)",
+            "keywords": [
+                "http",
+                "http-message",
+                "psr",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "support": {
+                "issues": "https://github.com/php-fig/http-message-util/issues",
+                "source": "https://github.com/php-fig/http-message-util/tree/1.1.5"
+            },
+            "time": "2020-11-24T22:02:12+00:00"
+        },
+        {
+            "name": "graham-campbell/result-type",
+            "version": "v1.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/GrahamCampbell/Result-Type.git",
+                "reference": "adccca3324eece92ca35463648c12b9e6293c05b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/GrahamCampbell/Result-Type/zipball/adccca3324eece92ca35463648c12b9e6293c05b",
+                "reference": "adccca3324eece92ca35463648c12b9e6293c05b",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2.5 || ^8.0",
+                "phpoption/phpoption": "^1.10"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^8.5.52 || ^9.6.34 || ^10.5.63 || ^11.5.55 || ^12.5.14"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "GrahamCampbell\\ResultType\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                }
+            ],
+            "description": "An Implementation Of The Result Type",
+            "keywords": [
+                "Graham Campbell",
+                "GrahamCampbell",
+                "Result Type",
+                "Result-Type",
+                "result"
+            ],
+            "support": {
+                "issues": "https://github.com/GrahamCampbell/Result-Type/issues",
+                "source": "https://github.com/GrahamCampbell/Result-Type/tree/v1.2.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/graham-campbell/result-type",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2026-08-24T09:06:52+00:00"
+        },
+        {
+            "name": "laravel/serializable-closure",
+            "version": "v2.0.16",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/laravel/serializable-closure.git",
+                "reference": "7cfc24e4fa2cca045fb8dd2a797a2b2b13b655ed"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/laravel/serializable-closure/zipball/7cfc24e4fa2cca045fb8dd2a797a2b2b13b655ed",
+                "reference": "7cfc24e4fa2cca045fb8dd2a797a2b2b13b655ed",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^8.1"
+            },
+            "require-dev": {
+                "illuminate/support": "^10.0|^11.0|^12.0|^13.0",
+                "nesbot/carbon": "^2.67|^3.0",
+                "pestphp/pest": "^2.36|^3.0|^4.0",
+                "phpstan/phpstan": "^2.0",
+                "symfony/var-dumper": "^6.2.0|^7.0.0|^8.0.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Laravel\\SerializableClosure\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Taylor Otwell",
+                    "email": "taylor@laravel.com"
+                },
+                {
+                    "name": "Nuno Maduro",
+                    "email": "nuno@laravel.com"
+                }
+            ],
+            "description": "Laravel Serializable Closure provides an easy and secure way to serialize closures in PHP.",
+            "keywords": [
+                "closure",
+                "laravel",
+                "serializable"
+            ],
+            "support": {
+                "issues": "https://github.com/laravel/serializable-closure/issues",
+                "source": "https://github.com/laravel/serializable-closure"
+            },
+            "time": "2026-08-18T20:28:54+00:00"
+        },
+        {
+            "name": "nikic/fast-route",
+            "version": "1.3.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/nikic/FastRoute.git",
+                "reference": "7476684f39bb9124b3be69ed3d84b66723920298"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/nikic/FastRoute/zipball/7476684f39bb9124b3be69ed3d84b66723920298",
+                "reference": "7476684f39bb9124b3be69ed3d84b66723920298",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.4.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.8.35|~5.7"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "src/functions.php"
+                ],
+                "psr-4": {
+                    "FastRoute\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Nikita Popov",
+                    "email": "nikic@php.net"
+                }
+            ],
+            "description": "Fast request router for PHP",
+            "keywords": [
+                "router",
+                "routing"
+            ],
+            "support": {
+                "issues": "https://github.com/nikic/FastRoute/issues",
+                "source": "https://github.com/nikic/FastRoute/tree/1.3.1"
+            },
+            "time": "2026-07-09T19:38:47+00:00"
+        },
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+                "url": "https://github.com/slimphp/Slim.git",
+                "reference": "e12cb05ca2a14e8f459d019e87a31dc915b80470"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/slimphp/Slim/zipball/e12cb05ca2a14e8f459d019e87a31dc915b80470",
+                "reference": "e12cb05ca2a14e8f459d019e87a31dc915b80470",
+                "shasum": ""
+            },
+            "require": {
+                "ext-json": "*",
+                "nikic/fast-route": "^1.3",
+                "php": "~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0 || ~8.5.0",
+                "psr/container": "^1.0 || ^2.0",
+                "psr/http-factory": "^1.1",
+                "psr/http-message": "^1.1 || ^2.0",
+                "psr/http-server-handler": "^1.0",
+                "psr/http-server-middleware": "^1.0",
+                "psr/log": "^1.1 || ^2.0 || ^3.0"
+            },
+            "require-dev": {
+                "adriansuter/php-autoload-override": "^1.4 || ^2",
+                "ext-simplexml": "*",
+                "guzzlehttp/psr7": "^2.6",
+                "httpsoft/http-message": "^1.1",
+                "httpsoft/http-server-request": "^1.1",
+                "laminas/laminas-diactoros": "^2.17 || ^3",
+                "nyholm/psr7": "^1.8",
+                "nyholm/psr7-server": "^1.1",
+                "phpspec/prophecy": "^1.19",
+                "phpspec/prophecy-phpunit": "^2.1",
+                "phpstan/phpstan": "^1 || ^2",
+                "phpunit/phpunit": "^9.6 || ^10 || ^11 || ^12",
+                "slim/http": "^1.3",
+                "slim/psr7": "^1.6",
+                "squizlabs/php_codesniffer": "^3.10",
+                "vimeo/psalm": "^5 || ^6"
+            },
+            "suggest": {
+                "ext-simplexml": "Needed to support XML format in BodyParsingMiddleware",
+                "ext-xml": "Needed to support XML format in BodyParsingMiddleware",
+                "php-di/php-di": "PHP-DI is the recommended container library to be used with Slim",
+                "slim/psr7": "Slim PSR-7 implementation. See https://www.slimframework.com/docs/v4/start/installation.html for more information."
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Slim\\": "Slim"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Josh Lockhart",
+                    "email": "hello@joshlockhart.com",
+                    "homepage": "https://joshlockhart.com"
+                },
+                {
+                    "name": "Andrew Smith",
+                    "email": "a.smith@silentworks.co.uk",
+                    "homepage": "https://silentworks.co.uk"
+                },
+                {
+                    "name": "Rob Allen",
+                    "email": "rob@akrabat.com",
+                    "homepage": "https://akrabat.com"
+                },
+                {
+                    "name": "Pierre Berube",
+                    "email": "pierre@lgse.com",
+                    "homepage": "https://www.lgse.com"
+                },
+                {
+                    "name": "Gabriel Manricks",
+                    "email": "gmanricks@me.com",
+                    "homepage": "http://gabrielmanricks.com"
+                }
+            ],
+            "description": "Slim is a PHP micro framework that helps you quickly write simple yet powerful web applications and APIs",
+            "homepage": "https://www.slimframework.com",
+            "keywords": [
+                "api",
+                "framework",
+                "micro",
+                "router"
+            ],
+            "support": {
+                "docs": "https://www.slimframework.com/docs/v4/",
+                "forum": "https://discourse.slimframework.com/",
+                "irc": "irc://irc.freenode.net:6667/slimphp",
+                "issues": "https://github.com/slimphp/Slim/issues",
+                "rss": "https://www.slimframework.com/blog/feed.rss",
+                "slack": "https://slimphp.slack.com/",
+                "source": "https://github.com/slimphp/Slim",
+                "wiki": "https://github.com/slimphp/Slim/wiki"
+            },
+            "funding": [
+                {
+                    "url": "https://opencollective.com/slimphp",
+                    "type": "open_collective"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/slim/slim",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2026-05-22T08:00:12+00:00"
+        },
+        {
+            "name": "symfony/polyfill-ctype",
+            "version": "v1.37.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-ctype.git",
+                "reference": "141046a8f9477948ff284fa65be2095baafb94f2"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/141046a8f9477948ff284fa65be2095baafb94f2",
+                "reference": "141046a8f9477948ff284fa65be2095baafb94f2",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2"
+            },
+            "provide": {
+                "ext-ctype": "*"
+            },
+            "suggest": {
+                "ext-ctype": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "thanks": {
+                    "url": "https://github.com/symfony/polyfill",
+                    "name": "symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Ctype\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Gert de Pagter",
+                    "email": "BackEndTea@gmail.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill for ctype functions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "ctype",
+                "polyfill",
+                "portable"
+            ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-ctype/tree/v1.37.0"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/nicolas-grekas",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2026-04-10T16:19:22+00:00"
+        },
+        {
+            "name": "symfony/polyfill-mbstring",
+            "version": "v1.38.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-mbstring.git",
+                "reference": "d3d318bad5e7a1bfbd026009c8bfb8d8f99ae6b6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/d3d318bad5e7a1bfbd026009c8bfb8d8f99ae6b6",
+                "reference": "d3d318bad5e7a1bfbd026009c8bfb8d8f99ae6b6",
+                "shasum": ""
+            },
+            "require": {
+                "ext-iconv": "*",
+                "php": ">=7.2"
+            },
+            "provide": {
+                "ext-mbstring": "*"
+            },
+            "suggest": {
+                "ext-mbstring": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "thanks": {
+                    "url": "https://github.com/symfony/polyfill",
+                    "name": "symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Mbstring\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill for the Mbstring extension",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "mbstring",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-mbstring/tree/v1.38.2"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/nicolas-grekas",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2026-05-27T06:59:30+00:00"
+        },
+        {
+            "name": "symfony/polyfill-php80",
+            "version": "v1.37.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php80.git",
+                "reference": "dfb55726c3a76ea3b6459fcfda1ec2d80a682411"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php80/zipball/dfb55726c3a76ea3b6459fcfda1ec2d80a682411",
+                "reference": "dfb55726c3a76ea3b6459fcfda1ec2d80a682411",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2"
+            },
+            "type": "library",
+            "extra": {
+                "thanks": {
+                    "url": "https://github.com/symfony/polyfill",
+                    "name": "symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php80\\": ""
+                },
+                "classmap": [
+                    "Resources/stubs"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Ion Bazan",
+                    "email": "ion.bazan@gmail.com"
+                },
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 8.0+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-php80/tree/v1.37.0"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/nicolas-grekas",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2026-04-10T16:19:22+00:00"
+        },
+        {
+            "name": "vlucas/phpdotenv",
+            "version": "v5.7.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/vlucas/phpdotenv.git",
+                "reference": "301c07936b16d88628b126b01d082ba153cf4c40"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/vlucas/phpdotenv/zipball/301c07936b16d88628b126b01d082ba153cf4c40",
+                "reference": "301c07936b16d88628b126b01d082ba153cf4c40",
+                "shasum": ""
+            },
+            "require": {
+                "ext-pcre": "*",
+                "graham-campbell/result-type": "^1.2",
+                "php": "^7.2.5 || ^8.0",
+                "phpoption/phpoption": "^1.10",
+                "symfony/polyfill-ctype": "^1.26",
+                "symfony/polyfill-mbstring": "^1.26",
+                "symfony/polyfill-php80": "^1.26"
+            },
+            "require-dev": {
+                "bamarni/composer-bin-plugin": "^1.8.2",
+                "ext-filter": "*",
+                "phpunit/phpunit": "^8.5.34 || ^9.6.13 || ^10.4.2"
+            },
+            "suggest": {
+                "ext-filter": "Required to use the boolean validator."
+            },
+            "type": "library",
+            "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                },
+                "branch-alias": {
+                    "dev-master": "5.6-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Dotenv\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                },
+                {
+                    "name": "Vance Lucas",
+                    "email": "vance@vancelucas.com",
+                    "homepage": "https://github.com/vlucas"
+                }
+            ],
+            "description": "Loads environment variables from `.env` to `$_ENV` and `$_SERVER` automagically, and optionally to `getenv()`.",
+            "keywords": [
+                "dotenv",
+                "env",
+                "environment"
+            ],
+            "support": {
+                "issues": "https://github.com/vlucas/phpdotenv/issues",
+                "source": "https://github.com/vlucas/phpdotenv/tree/v5.7.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/vlucas/phpdotenv",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2026-08-24T18:07:49+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": {},
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": {
+        "php": "^8.1",
+        "ext-pdo": "*",
+        "ext-pdo_mysql": "*"
+    },
+    "platform-dev": {},
+    "plugin-api-version": "2.9.0"
+}
diff --git a/webseite-react-php/slim-php/public/.htaccess b/webseite-react-php/slim-php/public/.htaccess
new file mode 100644
index 0000000..66ef8f6
--- /dev/null
+++ b/webseite-react-php/slim-php/public/.htaccess
@@ -0,0 +1,4 @@
+RewriteEngine On
+RewriteCond %{REQUEST_FILENAME} !-f
+RewriteCond %{REQUEST_FILENAME} !-d
+RewriteRule ^ index.php [QSA,L]
diff --git a/webseite-react-php/slim-php/public/index.php b/webseite-react-php/slim-php/public/index.php
new file mode 100644
index 0000000..ed3031f
--- /dev/null
+++ b/webseite-react-php/slim-php/public/index.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Config;
+use App\Middleware\CorsMiddleware;
+use App\Repository\ProductRepository;
+use DI\Container;
+use Slim\Factory\AppFactory;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$dotenv = Dotenv\Dotenv::createImmutable(dirname(__DIR__));
+$dotenv->safeLoad();
+
+$container = new Container();
+$container->set(PDO::class, static fn () => Config::pdo());
+$container->set(
+    ProductRepository::class,
+    static fn ($c) => new ProductRepository($c->get(PDO::class))
+);
+
+AppFactory::setContainer($container);
+$app = AppFactory::create();
+
+$app->addBodyParsingMiddleware();
+$app->addRoutingMiddleware();
+$app->addErrorMiddleware(true, true, true);
+$app->add(new CorsMiddleware());
+
+(require __DIR__ . '/../src/Routes/productRoutes.php')($app);
+
+$app->run();
diff --git a/webseite-react-php/slim-php/public/router.php b/webseite-react-php/slim-php/public/router.php
new file mode 100644
index 0000000..71c26d8
--- /dev/null
+++ b/webseite-react-php/slim-php/public/router.php
@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+$uri = urldecode(parse_url($_SERVER['REQUEST_URI'] ?? '/', PHP_URL_PATH) ?: '/');
+
+if ($uri !== '/' && file_exists(__DIR__ . $uri)) {
+    return false;
+}
+
+require __DIR__ . '/index.php';
diff --git a/webseite-react-php/slim-php/sql/nerdshop.sql b/webseite-react-php/slim-php/sql/nerdshop.sql
index 318bead..2324f2a 100644
--- a/webseite-react-php/slim-php/sql/nerdshop.sql
+++ b/webseite-react-php/slim-php/sql/nerdshop.sql
@@ -32,3 +32,26 @@ INSERT INTO products (id, title, sku, stock, price, description, tagline) VALUES
 ('675bee96bb39023b77e6cda3', 'Automatic Plant Waterer with Compliment Dispenser', 'GRD0334', 17, 69.99, 'Keep your plants happy and hydrated with automatic watering and daily compliments.', 'Nurture your plants, boost their self-esteem.'),
 ('675bee96bb39023b77e6cda4', 'Self-Stirring Cereal Bowl', 'KIT0445', 55, 24.95, 'Enjoy perfectly crunchy cereal every time with this self-stirring bowl.', 'No more soggy surprises.'),
 ('675bee96bb39023b77e6cda5', 'Polygon Planet Lamp', 'LMP0556', 4, 39.90, 'Transform your space with the enchanting glow of a planetarium-inspired lamp.', 'Bring the cosmos into your home.');
+
+CREATE TABLE IF NOT EXISTS users (
+  id            INT UNSIGNED  NOT NULL AUTO_INCREMENT,
+  username      VARCHAR(64)   NOT NULL,
+  email         VARCHAR(255)  NOT NULL,
+  password_hash VARCHAR(255)   NOT NULL,
+  token         VARCHAR(64)    NULL DEFAULT NULL,
+  created_at    TIMESTAMP       NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (id),
+  UNIQUE KEY uq_users_username (username),
+  UNIQUE KEY uq_users_email (email),
+  KEY idx_users_token (token)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+INSERT INTO users (username, email, password_hash)
+VALUES (
+  'megaman',
+  'order@gkontra.de',
+  '$2y$12$CdOg.e08jP968kQoA298Ne92r9pyEYBfSya4gFWQCh.X8gJhmDaVW'
+)
+ON DUPLICATE KEY UPDATE
+  email = VALUES(email),
+  password_hash = VALUES(password_hash);
diff --git a/webseite-react-php/slim-php/sql/users.sql b/webseite-react-php/slim-php/sql/users.sql
new file mode 100644
index 0000000..332cb44
--- /dev/null
+++ b/webseite-react-php/slim-php/sql/users.sql
@@ -0,0 +1,24 @@
+USE nerdshop;
+
+CREATE TABLE IF NOT EXISTS users (
+  id            INT UNSIGNED  NOT NULL AUTO_INCREMENT,
+  username      VARCHAR(64)   NOT NULL,
+  email         VARCHAR(255)  NOT NULL,
+  password_hash VARCHAR(255)   NOT NULL,
+  token         VARCHAR(64)    NULL DEFAULT NULL,
+  created_at    TIMESTAMP       NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (id),
+  UNIQUE KEY uq_users_username (username),
+  UNIQUE KEY uq_users_email (email),
+  KEY idx_users_token (token)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+INSERT INTO users (username, email, password_hash)
+VALUES (
+  'megaman',
+  'order@gkontra.de',
+  '$2y$12$CdOg.e08jP968kQoA298Ne92r9pyEYBfSya4gFWQCh.X8gJhmDaVW'
+)
+ON DUPLICATE KEY UPDATE
+  email = VALUES(email),
+  password_hash = VALUES(password_hash);
diff --git a/webseite-react-php/slim-php/src/Config.php b/webseite-react-php/slim-php/src/Config.php
new file mode 100644
index 0000000..2459134
--- /dev/null
+++ b/webseite-react-php/slim-php/src/Config.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App;
+
+use PDO;
+
+final class Config
+{
+    public static function pdo(): PDO
+    {
+        $dsn = sprintf(
+            'mysql:host=%s;port=%s;dbname=%s;charset=utf8mb4',
+            $_ENV['DB_HOST'] ?? '127.0.0.1',
+            $_ENV['DB_PORT'] ?? '3306',
+            $_ENV['DB_NAME'] ?? 'nerdshop'
+        );
+
+        return new PDO(
+            $dsn,
+            $_ENV['DB_USER'] ?? 'root',
+            $_ENV['DB_PASS'] ?? '',
+            [
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
+            ]
+        );
+    }
+}
diff --git a/webseite-react-php/slim-php/src/Domain/Product.php b/webseite-react-php/slim-php/src/Domain/Product.php
new file mode 100644
index 0000000..fe7b154
--- /dev/null
+++ b/webseite-react-php/slim-php/src/Domain/Product.php
@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Domain;
+
+final class Product
+{
+    public function __construct(
+        public string $id,
+        public string $title,
+        public string $sku,
+        public int $stock,
+        public float $price,
+        public string $description,
+        public string $tagline,
+    ) {
+    }
+
+    public static function fromRow(array $row): self
+    {
+        return new self(
+            id: $row['id'],
+            title: $row['title'],
+            sku: $row['sku'],
+            stock: (int) $row['stock'],
+            price: (float) $row['price'],
+            description: $row['description'],
+            tagline: $row['tagline'],
+        );
+    }
+
+    /** Kompatibel mit der React-App (_id statt id). */
+    public function toArray(): array
+    {
+        return [
+            '_id' => $this->id,
+            'title' => $this->title,
+            'sku' => $this->sku,
+            'stock' => $this->stock,
+            'price' => $this->price,
+            'description' => $this->description,
+            'tagline' => $this->tagline,
+        ];
+    }
+}
diff --git a/webseite-react-php/slim-php/src/Domain/User.php b/webseite-react-php/slim-php/src/Domain/User.php
new file mode 100644
index 0000000..469503a
--- /dev/null
+++ b/webseite-react-php/slim-php/src/Domain/User.php
@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Domain;
+
+final class User
+{
+    public function __construct(
+        public int $id,
+        public string $username,
+        public string $email,
+        public string $passwordHash,
+        public ?string $token,
+        public string $createdAt,
+    ) {
+    }
+
+    public static function fromRow(array $row): self
+    {
+        return new self(
+            id: (int) $row['id'],
+            username: $row['username'],
+            email: $row['email'],
+            passwordHash: $row['password_hash'],
+            token: $row['token'] ?: null,
+            createdAt: $row['created_at'],
+        );
+    }
+
+    public function toArray(): array
+    {
+        return [
+            'id' => $this->id,
+            'username' => $this->username,
+            'email' => $this->email,
+            'created_at' => $this->createdAt,
+        ];
+    }
+}
diff --git a/webseite-react-php/slim-php/src/Middleware/CorsMiddleware.php b/webseite-react-php/slim-php/src/Middleware/CorsMiddleware.php
new file mode 100644
index 0000000..ed08757
--- /dev/null
+++ b/webseite-react-php/slim-php/src/Middleware/CorsMiddleware.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Middleware;
+
+use Psr\Http\Message\ResponseInterface as Response;
+use Psr\Http\Message\ServerRequestInterface as Request;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface as Handler;
+use Slim\Psr7\Response as SlimResponse;
+
+final class CorsMiddleware implements MiddlewareInterface
+{
+    public function process(Request $request, Handler $handler): Response
+    {
+        $origin = $_ENV['CORS_ORIGIN'] ?? 'http://localhost:5173';
+
+        if ($request->getMethod() === 'OPTIONS') {
+            $response = new SlimResponse(204);
+        } else {
+            $response = $handler->handle($request);
+        }
+
+        return $response
+            ->withHeader('Access-Control-Allow-Origin', $origin)
+            ->withHeader('Access-Control-Allow-Headers', 'Content-Type, Authorization')
+            ->withHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, PATCH, DELETE, OPTIONS');
+    }
+}
diff --git a/webseite-react-php/slim-php/src/Repository/ProductRepository.php b/webseite-react-php/slim-php/src/Repository/ProductRepository.php
new file mode 100644
index 0000000..6e538bd
--- /dev/null
+++ b/webseite-react-php/slim-php/src/Repository/ProductRepository.php
@@ -0,0 +1,115 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Repository;
+
+use App\Domain\Product;
+use PDO;
+
+final class ProductRepository
+{
+    public function __construct(private PDO $pdo)
+    {
+    }
+
+    /** @return Product[] */
+    public function findAll(): array
+    {
+        $stmt = $this->pdo->query('SELECT * FROM products ORDER BY sku');
+
+        return array_map(Product::fromRow(...), $stmt->fetchAll());
+    }
+
+    public function findById(string $id): ?Product
+    {
+        $stmt = $this->pdo->prepare('SELECT * FROM products WHERE id = :id');
+        $stmt->execute(['id' => $id]);
+        $row = $stmt->fetch();
+
+        return $row ? Product::fromRow($row) : null;
+    }
+
+    public function create(array $data): Product
+    {
+        $id = $data['_id'] ?? $this->generateId();
+
+        $stmt = $this->pdo->prepare(
+            'INSERT INTO products (id, title, sku, stock, price, description, tagline)
+             VALUES (:id, :title, :sku, :stock, :price, :description, :tagline)'
+        );
+        $stmt->execute([
+            'id' => $id,
+            'title' => $data['title'],
+            'sku' => $data['sku'],
+            'stock' => (int) $data['stock'],
+            'price' => (float) $data['price'],
+            'description' => $data['description'],
+            'tagline' => $data['tagline'],
+        ]);
+
+        $product = $this->findById($id);
+
+        if ($product === null) {
+            throw new \RuntimeException('Product could not be created');
+        }
+
+        return $product;
+    }
+
+    public function update(string $id, array $data): ?Product
+    {
+        if ($this->findById($id) === null) {
+            return null;
+        }
+
+        $stmt = $this->pdo->prepare(
+            'UPDATE products
+             SET title = :title, sku = :sku, stock = :stock,
+                 price = :price, description = :description, tagline = :tagline
+             WHERE id = :id'
+        );
+        $stmt->execute([
+            'id' => $id,
+            'title' => $data['title'],
+            'sku' => $data['sku'],
+            'stock' => (int) $data['stock'],
+            'price' => (float) $data['price'],
+            'description' => $data['description'],
+            'tagline' => $data['tagline'],
+        ]);
+
+        return $this->findById($id);
+    }
+
+    public function patch(string $id, array $data): ?Product
+    {
+        $current = $this->findById($id);
+
+        if ($current === null) {
+            return null;
+        }
+
+        return $this->update($id, [
+            'title' => $data['title'] ?? $current->title,
+            'sku' => $data['sku'] ?? $current->sku,
+            'stock' => array_key_exists('stock', $data) ? (int) $data['stock'] : $current->stock,
+            'price' => array_key_exists('price', $data) ? (float) $data['price'] : $current->price,
+            'description' => $data['description'] ?? $current->description,
+            'tagline' => $data['tagline'] ?? $current->tagline,
+        ]);
+    }
+
+    public function delete(string $id): bool
+    {
+        $stmt = $this->pdo->prepare('DELETE FROM products WHERE id = :id');
+        $stmt->execute(['id' => $id]);
+
+        return $stmt->rowCount() > 0;
+    }
+
+    private function generateId(): string
+    {
+        return bin2hex(random_bytes(12));
+    }
+}
diff --git a/webseite-react-php/slim-php/src/Repository/UserRepository.php b/webseite-react-php/slim-php/src/Repository/UserRepository.php
new file mode 100644
index 0000000..aac29d9
--- /dev/null
+++ b/webseite-react-php/slim-php/src/Repository/UserRepository.php
@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Repository;
+
+use App\Domain\User;
+use PDO;
+
+final class UserRepository
+{
+    public function __construct(private PDO $pdo)
+    {
+    }
+
+    /** @return User[] */
+    public function findAll(): array
+    {
+        $stmt = $this->pdo->query('SELECT * FROM users ORDER BY username');
+
+        return array_map(User::fromRow(...), $stmt->fetchAll());
+    }
+
+    public function findById(int $id): ?User
+    {
+        $stmt = $this->pdo->prepare('SELECT * FROM users WHERE id = :id');
+        $stmt->execute(['id' => $id]);
+        $row = $stmt->fetch();
+
+        return $row ? User::fromRow($row) : null;
+    }
+
+    public function findByUsernameOrEmail(string $login): ?User
+    {
+        $stmt = $this->pdo->prepare(
+            'SELECT * FROM users WHERE username = :login OR email = :login LIMIT 1'
+        );
+        $stmt->execute(['login' => $login]);
+        $row = $stmt->fetch();
+
+        return $row ? User::fromRow($row) : null;
+    }
+}
diff --git a/webseite-react-php/slim-php/src/Routes/productRoutes.php b/webseite-react-php/slim-php/src/Routes/productRoutes.php
new file mode 100644
index 0000000..e0fed4c
--- /dev/null
+++ b/webseite-react-php/slim-php/src/Routes/productRoutes.php
@@ -0,0 +1,155 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Repository\ProductRepository;
+use Psr\Http\Message\ResponseInterface as Response;
+use Psr\Http\Message\ServerRequestInterface as Request;
+use Slim\App;
+
+return function (App $app): void {
+    $container = $app->getContainer();
+
+    if ($container === null) {
+        throw new RuntimeException('DI container is not configured');
+    }
+
+    $json = static function (Response $response, mixed $data, int $status = 200): Response {
+        $response->getBody()->write(json_encode($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES));
+
+        return $response
+            ->withHeader('Content-Type', 'application/json')
+            ->withStatus($status);
+    };
+
+    $requiredFields = ['title', 'sku', 'stock', 'price', 'description', 'tagline'];
+
+    $validate = static function (array $data) use ($requiredFields): ?string {
+        foreach ($requiredFields as $field) {
+            if (!isset($data[$field]) || $data[$field] === '') {
+                return "Missing field: {$field}";
+            }
+        }
+
+        return null;
+    };
+
+    $app->get('/', function (Request $request, Response $response) use ($json): Response {
+
+        return $json($response, [
+            'name' => 'Nerdshop API',
+            'endpoints' => [
+                'GET /products',
+                'GET /products/{id}',
+                'POST /products',
+                'PUT /products/{id}',
+                'PATCH /products/{id}',
+                'DELETE /products/{id}',
+            ],
+        ]);
+    });
+
+    // app.get('/products', (req,res) => {
+    //  const products =  productManager.getAll();
+    //  res.send(products);
+    // })
+
+    $app->get('/products', function (Request $request, Response $response) use ($container, $json): Response {
+        $repo = $container->get(ProductRepository::class);
+        $items = array_map(static fn($product) => $product->toArray(), $repo->findAll());
+
+        return $json($response, $items);
+    });
+
+    $app->get('/products/{id}', function (Request $request, Response $response, array $args) use ($container, $json): Response {
+        $product = $container->get(ProductRepository::class)->findById($args['id']);
+
+        if ($product === null) {
+            return $json($response, ['error' => 'Product not found'], 404);
+        }
+
+        return $json($response, $product->toArray());
+    });
+
+    $app->post('/products', function (Request $request, Response $response) use ($container, $json, $validate): Response {
+        $data = (array) $request->getParsedBody();
+        $error = $validate($data);
+
+        if ($error !== null) {
+            return $json($response, ['error' => $error], 400);
+        }
+
+        try {
+            $product = $container->get(ProductRepository::class)->create($data);
+        } catch (\PDOException $exception) {
+            if ((int) $exception->getCode() === 23000) {
+                return $json($response, ['error' => 'SKU already exists'], 409);
+            }
+
+            throw $exception;
+        }
+
+        return $json($response, $product->toArray(), 201);
+    });
+
+    $app->put('/products/{id}', function (Request $request, Response $response, array $args) use ($container, $json, $validate): Response {
+        $data = (array) $request->getParsedBody();
+        $error = $validate($data);
+
+        if ($error !== null) {
+            return $json($response, ['error' => $error], 400);
+        }
+
+        try {
+            $product = $container->get(ProductRepository::class)->update($args['id'], $data);
+        } catch (\PDOException $exception) {
+            if ((int) $exception->getCode() === 23000) {
+                return $json($response, ['error' => 'SKU already exists'], 409);
+            }
+
+            throw $exception;
+        }
+
+        if ($product === null) {
+            return $json($response, ['error' => 'Product not found'], 404);
+        }
+
+        return $json($response, $product->toArray());
+    });
+
+    $app->patch('/products/{id}', function (Request $request, Response $response, array $args) use ($container, $json): Response {
+        $data = (array) $request->getParsedBody();
+        $allowed = ['title', 'sku', 'stock', 'price', 'description', 'tagline'];
+        $patch = array_intersect_key($data, array_flip($allowed));
+
+        if ($patch === []) {
+            return $json($response, ['error' => 'No fields to update'], 400);
+        }
+
+        try {
+            $product = $container->get(ProductRepository::class)->patch($args['id'], $patch);
+        } catch (\PDOException $exception) {
+            if ((int) $exception->getCode() === 23000) {
+                return $json($response, ['error' => 'SKU already exists'], 409);
+            }
+
+            throw $exception;
+        }
+
+        if ($product === null) {
+            return $json($response, ['error' => 'Product not found'], 404);
+        }
+
+        return $json($response, $product->toArray());
+    });
+
+    $app->delete('/products/{id}', function (Request $request, Response $response, array $args) use ($container, $json): Response {
+        $deleted = $container->get(ProductRepository::class)->delete($args['id']);
+
+        if (!$deleted) {
+            return $json($response, ['error' => 'Product not found'], 404);
+        }
+
+        return $response->withStatus(204);
+    });
+};