Magento 2 Superglobals Get & Post Parameters + Session

Magento-2-Superglobals-Get-PostParameters-Session

<?php  
/*  
* Controller 
*/ 

 

// $_SERVER 

$this->getRequest()->getServer('SERVER_NAME'); 
// $_GET 
$this->getRequest()->getParams(); 
$this->getRequest()->getParam('getparam'); 

// $_POST 
$this->getRequest()->getPostValue(); 
$this->getRequest()->getPostValue('param'); 

/*  
* Outside Controller 
*/ 
 

protected $request; 

public function __construct( \Magento\Framework\App\Request\Http $request) { 

    $this->request = $request 

} 

// $_SERVER 

$this->request->getServer('SERVER_NAME'); 

// $_GET 
$this->request->getParams(); 

$this->request->getParam('getparam') 

// $_POST 
$this->request->getPostValue(); 

 

// pass to block (I think) 

public function getRequest() { 

    return $this->request; 

} 

// template 

$this->getRequest()->getParams(); // etc 

 

// $_SESSION 
 

// Different sessions: 

// -   \Magento\Backend\Model\Session 

// -   \Magento\Catalog\Model\Session 

// -   \Magento\Checkout\Model\Session 

// -   \Magento\Customer\Model\Session 

// -    \Magento\Newsletter\Model\Session 

// for example 

protected $catalogSession; 

public function __construct(\Magento\Catalog\Model\Session $catalogSession){ 

    $this->catalogSession = $catalogSession; 

} 

$this->catalogSession->setMyValue('test'); 

$this->catalogSession->getMyValue(); 

// pass to block 

public function getCatalogSession() { 

    return $this->catalogSession; 

} 

// template 

$this->getCatalogSession()->setMyValue('test'); 

$this->getCatalogSession()->getMyValue();