MagentoExplanation

Create a File in Root of Magento2 <?php use Magento \ Framework \ App \ Bootstrap ; require __DIR__ . '/app/bootstrap.php' ; $params = $_SERVER ; $bootstrap = Bootstrap : : create ( BP , $params ) ; $obj = $bootstrap - > getObjectManager ( ) ; $state = $obj - > get ( 'Magento\Framework\App\State' ) ; $state - > setAreaCode ( 'frontend' ) ;        /*$params = (array) json_decode(file_get_contents('php://input'), TRUE);     print_r($params); ////////// Get Data From Postman Api/////////     $catid=$params['caterory'];     echo "string+++++".$catid;*/           /*echo"<pre>++";     print_r($_GET['caterory']);*/ //// Get Data Through URL////////      $catid = $_GET [ 'cateroryid' ] ;      $obj...

Admin Form File Of Module <?php namespace Namespace \ ModuleName \ Block \ Adminhtml \ Model \ Edit \ Tab ; class Main extends \ Magento \ Backend \ Block \ Widget \ Form \ Generic implements \ Magento \ Backend \ Block \ Widget \ Tab \ TabInterface {      /* *      * @var \Magento\Store\Model\System\Store       */      protected $_systemStore ;       protected $_allowedAttribute ;      /* *      * @param \Magento\Backend\Block\Template\Context $context      * @param \Magento\Framework\Registry $registry      * @param \Magento\Framework\Data\FormFactory $formFactory      * @param \Magento\Store\Model\System\Store $systemStore      * @param array $data       */ ...