Embryo Session

Middleware to start a php session using the request data and close it after return the response.

Requirements

• PHP >= 7.1
• A PSR-7 http message implementation and PSR-17 http factory implementation (ex. Embryo-Http)
• A PSR-15 http server request implementation (ex. Embryo-Middleware)

Installation

Using Composer:

$ composer require davidecesarano/embryo-session

Usage

Creates a middleware for setting session item:

class TestSetSessionMiddleware implements MiddlewareInterface
{
    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
    {
        $session = $request->getAttribute('session');
        $session->set('name', 'World');
        $response = $handler->handle($request);
        return $response->write('Hello '.$session->get('name').'</p><p><a href="test.php">Other Page</a></p>');
    }
}

Creates another middleware for getting session item:

class TestGetSessionMiddleware implements MiddlewareInterface
{
    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
    {
        $session = $request->getAttribute('session');
        $response = $handler->handle($request);
        return $response->write('Hello '.$session->get('name').'</p>');
    }
}

Adds middleware to dispatcher:

$session = new Session;
$middleware = new RequestHandler;
$middleware->add(
    (new SessionMiddleware)
        ->setSession($session)
        ->setOptions([
            'use_cookies'      => false,
            'use_only_cookies' => true
        ])
);
$middleware->add(TestSetSessionMiddleware::class);
$middleware->add(TestGetSessionMiddleware::class);
$response = $middleware->dispatch($request, $response);

Options

setName(string $name)

The session name. If it's not provided, use the php's default.

seOptions(array $options = [])

Array of options passed to session_start().

setSessionRequestAttribute(string $name)

The session request attribute. If it's not provided, use $request->getAttribute('session').

Collection

Retrieving data

You may retrieve an item from the session and you may also pass a default value as the second argument to the get method:

$session->get('key', 'default');

Retrieving all session data

If you would like to retrieve all the data in the session, you may use the all method:

$session->all();

Determining if an item exists in the session

To determine if an item is present in the session, you may use the has method. The has method returns true if the item is present and is not null:

if ($session->has('key')) {
    //...
}

Storing data

The set method may be used to set a new value onto a session:

$session->set('name', 'value');

Flash data

You may wish to store items in the session only for the next request using the flash method:

$session->flash('name', 'value');

Deleting data

The remove method will remove a piece of data from the session. If you would like the remove all data from the session, you may use the clear method:

$session->remove('name');
$session->clear();