<?php
$slug = get_query_var('api_deal');
$api = new API_consumer();

//$product = $api->fetchOne($slug);
$product = $api->fetchAll();
get_header();

$posts = $product->posts; // ->array of posts in json
$pagesNum = $product->pages_num;
$totalProducts = $product->total;

//echo $pagesNum;
//echo $totalProducts;


foreach($posts as $value){

    $title = $value->title;
    $date = $value->date;
    $price = $value->price;
    $sale_price = $value->sale_price;
    $location = $value->location;
    $thumbnail = $value->thumbnail;

    //echo "<img alt=\"\" src=\"$thumbnail->medium[0]\" style=\"width: 150px; height: 133px;\" />";
    //echo "<img alt=\"\" src=\"$thumbnail->full[0]\" style=\"width: 150px; height: 133px;\" />";


    //echo $title;
    //echo $date;
    //echo $sale_price;
    //echo $location;

    $tempThumbnail= array_slice($thumbnail, 1, 1, true);
    $valueThumb = $tempThumbnail[0];
    $valueMedium = $tempThumbnail[1];
    $valueFull = $tempThumbnail[2];
    $valueThumb = $tempThumbnail[3];

}

<?php
get_footer();