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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Iris\Mapping;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class ConfigCollection extends Base  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var \Iris\Mapping\Image  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $imageMapping;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var \Iris\Mapping\SimpleCollection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $simpleCollectionMapping;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function assign(array $externalData)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $configCollection = new \Iris\Transfer\Catalog\ConfigCollection();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        foreach ($externalData as $c) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $data[] = new \Iris\Transfer\Catalog\Config([  | 
            
                            
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                                'sku'               => $c['sku'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'name'              => $c['name'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'description'       => $c['description'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'brand'             => $c['brand'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'price'             => $c['price'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'special_price'     => $c['special_price'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'special_from_date' => $c['special_from_date'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'special_to_date'   => $c['special_to_date'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'attributes'        => $c['attributes'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'attribute_set'     => $c['attribute_set'],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'images'            => $this->getImageMapping()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                                            ->assign($c['images']),  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'simple_collection' => $this->getSimpleCollectionMapping()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                                            ->assign($c['simple_collection'])  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                ]);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $configCollection;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \Iris\Transfer\Catalog\ConfigCollection $internalData  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function map($internalData)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $externalData = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($internalData as $config) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $externalData[] = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'sku'               => $config->getSku(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'simple_collection' => $this->getSimpleCollectionMapping()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                                            ->map($config->getSimpleCollection())  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $externalData;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \Iris\Mapping\Image  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getImageMapping()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->imageMapping || $this->setImageMapping(Image::getInstance());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->imageMapping;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \Iris\Mapping\Image $map  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \Iris\Mapping\ConfigCollection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function setImageMapping(Image $map)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->imageMapping = $map;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \Iris\Mapping\SimpleCollection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getSimpleCollectionMapping()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->simpleCollectionMapping ||  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->setSimpleCollectionMapping(SimpleCollection::getInstance());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->simpleCollectionMapping;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \Iris\Mapping\SimpleCollection $map  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \Iris\Mapping\ConfigCollection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function setSimpleCollectionMapping(SimpleCollection $map)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->simpleCollectionMapping = $map;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.