Zend 2 Framework Interview Questions and Answers

It’s an open source and object-oriented framework for web applications implemented in PHP7. It has a collection of professional PHP packages with an astounding number of installations (more than 379 million installations). Zend framework 2 can be used to develop web services and applications using PHP version 5.6 or more.

• Speed up process due to utilizing an available framework.
• Has great multi-functionality quality and object focus quality.
• Simple to integrate and freedom to develop functionality.
• Excellent MVC components.
• Rapid application and tolling development feature.

In Zend Framework 2, the module is a system used to organize the main application specific code within each module. The skeleton provided application module is used by developers to offer bootstrapping, routing and error configuration to the whole application.

In Zend Framework 2, the ServiceManager is injected within any controller by default as it extends the AbstractController implementing the ServiceLocatorAwareInterface interface.

In the Zend framework, routing is an act to match a request to a given controller. It will examine the URI request and will attempt to match the URI path segment against provided constraints. It also can be utilized other portions of the request URI as well as the environment even.

• Open the module.config.php of the module and its path is module\{module}\config\module.config.php
• Add/Update given code in the view_manager array
• 'template_map' => array(
    'layout/layout' => __DIR__ . '/../view/layout/layout.phtml', //Setup the layout file here
    'error/404' => __DIR__ . '/../view/error/404.phtml', //Setup the error from here
),

To create custom view helpers to Zend framework 2, follow these steps:

• Create a helper under the src directory. In this case, we name it Testhelper.
• Build Testhelper content to:

namespace Test\View\Helper;

use Zend\View\Helper\AbstractHelper;

class Testhelper extends AbstractHelper

{

public function __invoke($str, $find)

 {

if (! is_string($str)){

return 'must be string';

  }

if (strpos($str, $find) === false){

return 'not found';

  }

return 'found';

  }

}

• Now register it in Module.php
• Call it in the view

echo $this->test_helper("me","e");

Zend Framework 3 is the latest version to the series, It was released on 18 June 2016 and is optimized according to user suggestions and includes many feature additions and bug fixes compared to its previous version.