Slim framework get the data from a form - php

Question

I try to make a simple form with SLIM framework.
I don't know how to display the posted data. I want just to try to echo it.
I heard that I need to use extra library RESPECT, I think SLIM can do such small thing.
here is my code :
require '../../vendor/slim/slim/Slim/Slim.php';
\Slim\Slim::registerAutoloader();
$app = new \Slim\Slim();
$app->get('/', function() use ($app){
$app->render('form.php');
});
$app->post('/', function() use ($app){
$req = $app->request();
$errors = array();
$params = array(
'email' => array(
'name'=>'Email',
'required'=>true,
'max_length'=>64,
),
'subject' => array(
'name'=>'Subject',
'required'=>true,
'max_length'=>256,
),
);
//submit_to_db($email, $subject, $message);
$app->flash('message','Form submitted!');
$app->redirect('./');
});
$app->run();

Answer 1

In Slim 2, you can access to your posted data using post() method of request():
$app->post('/', function () use ($app) {
$request = $app->request();
$email = $request->post('Email');
$subject = $request->post('Subject');
echo "Email: $email<br/>";
echo "Subject: $subject";
});
In Slim 3, the request is passed to the callback/controller/etc. and you can call getParam() which fetches the value from body or query string (in that order):
$app->post('/', function ($request, $response, $args) {
$email = $request->getParam('Email');
$subject = $request->getParam('Subject');
echo "Email: $email<br/>";
echo "Subject: $subject";
});
Starting from Slim 3.1 there are also getParsedBodyParam() and getFetchParam() which fetch only from body or query string. (PR #1620)
Just as a reminder, you can provide a default value: $request->getParam('Email', 'default_value')