Simple Counter App - Yii Typing CST Test

Simple Counter App — Yii Code

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

<?php

// controllers/CounterController.php
namespace app\controllers;
use Yii;
use yii\web\Controller;

class CounterController extends Controller {
	public function actionIndex() {
		$session = Yii::$app->session;
		if (!$session->has('count')) { $session->set('count', 0); }
		$count = $session->get('count');
		return $this->render('index', ['count' => $count]);
	}

	public function actionIncrement() {
		$session = Yii::$app->session;
		$session->set('count', $session->get('count', 0) + 1);
		return $this->redirect(['index']);
	}

	public function actionDecrement() {
		$session = Yii::$app->session;
		$session->set('count', $session->get('count', 0) - 1);
		return $this->redirect(['index']);
	}

	public function actionReset() {
		Yii::$app->session->set('count', 0);
		return $this->redirect(['index']);
	}
}

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

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