Learn CAKEPHP with Real Code Examples

<?php

// src/Controller/CounterController.php
namespace App\Controller;
use App\Controller\AppController;

class CounterController extends AppController {
    public function initialize(): void {
        parent::initialize();
        $this->loadComponent('RequestHandler');
        if (!$this->request->getSession()->check('count')) {
        $this->request->getSession()->write('count', 0);
        }
    }

    public function index() {
        $count = $this->request->getSession()->read('count');
        $this->set(compact('count'));
    }

    public function increment() {
        $count = $this->request->getSession()->read('count') + 1;
        $this->request->getSession()->write('count', $count);
        return $this->redirect(['action' => 'index']);
    }

    public function decrement() {
        $count = $this->request->getSession()->read('count') - 1;
        $this->request->getSession()->write('count', $count);
        return $this->redirect(['action' => 'index']);
    }

    public function reset() {
        $this->request->getSession()->write('count', 0);
        return $this->redirect(['action' => 'index']);
    }
}

// templates/Counter/index.php
<h2>Counter: <?= $count ?></h2>
<form method='post' action='/counter/increment'><button type='submit'>+</button></form>
<form method='post' action='/counter/decrement'><button type='submit'>-</button></form>
<form method='post' action='/counter/reset'><button type='submit'>Reset</button></form>

Demonstrates a simple CakePHP controller and view for a counter using session for state persistence.