How to Get Configurable Attribute Label and Value in Magento 2

collection;configurable-productcustommagento2product-attribute

To use Object Manager is not a proper way but this code is for testing purpose only.

I want to get attribute value which is available in configurable products. I have tried with below code, but I get an all Attribute value which is assigned in the attributes drop-down list.

Please See below code 

   <?php
    $objectManager  = \Magento\Framework\App\ObjectManager::getInstance();
    $repository = $objectManager->create('Magento\Catalog\Model\ProductRepository');
    $product    = $repository->getById($p_coll->getId());    
    $data = $product->getTypeInstance()->getConfigurableOptions($product);
    $options = array();

    foreach ($data as $attr) {
        foreach ($attr as $p) {
            $options[] = $p['attribute_code'];
        }
    }


    $statu = 0;


    $eavConfig = $objectManager->get('\Magento\Eav\Model\Config');
    foreach (array_unique($options) as $code) {
        $attribute     = $eavConfig->getAttribute('catalog_product', $code);
        $options       = $attribute->getSource()->getAllOptions();
        $optionsExists = array();
        if ($options) {
            echo $code;
            echo "<select>";
            foreach ($options as $option) {
                    //$optionsExists[] = $option['label']; 
                if ($option['label']) {
                    echo "<option value='" . $option['label'] . "'>" . $option['label'] . "</option>";
                }
            }
            echo "</select>";
        }


    }
    ?>

Please see below screen shot

enter image description here

There are only 2 colours available for this configurable product, but all colour options show in my collection. Please see below screenshot.
enter image description here

Best Answer

Please try below code and please enter product id to get the value

<?php

use Magento\Framework\App\Bootstrap;
require __DIR__ . '/app/bootstrap.php';
// adding bootstrap
$bootstraps = Bootstrap::create(BP, $_SERVER);
$object_Manager = $bootstraps->getObjectManager();

$app_state = $object_Manager->get('\Magento\Framework\App\State');
$app_state->setAreaCode('frontend');


$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$product = $objectManager->create('Magento\Catalog\Model\Product')->load(**product id**);

$productTypeInstance = $objectManager->get('Magento\ConfigurableProduct\Model\Product\Type\Configurable');
$productAttributeOptions = $productTypeInstance->getConfigurableAttributesAsArray($product);
foreach ($productAttributeOptions as $key => $value) {

    $tmp_option = $value['values'];
    if(count($tmp_option) > 0)
    {
        echo "<h3>".$value['label']."</h3>";
        echo "<select id='".$key."_".$value['label']."'>";
        foreach ($tmp_option as $tmp) 
        {
            echo "<option value='".$key."_".$tmp['value_index']."'>".$tmp['label']."</option>";
        }
        echo "</select>";
    }
}
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