Missing variable: sku even added in controller!

Code: Select all

$data['model'] = $product_info['model'];

Code: Select all

$data['sku'] = $product_info['sku'];

Code: Select all

<li class="p-model"><?php echo $text_model; ?> <span class="p-model" itemprop="model"><?php echo $model; ?></span></li>

Code: Select all

<li class="p-model">SKU: <span class="p-model" itemprop="sku"><?php echo $sku; ?></span></li>

Code: Select all

Notice: Undefined variable: sku in..... 

Code: Select all

$data['products'][] = array(

Code: Select all

$data['products'][] = array(
					'product_id'  => $result['product_id'],
					'thumb'       => $image,
					'name'        => $result['name'],
					'description' => utf8_substr(strip_tags(html_entity_decode($result['description'], ENT_QUOTES, 'UTF-8')), 0, $this->config->get('config_product_description_length')) . '..',
					'price'       => $price,
					'special'     => $special,
					'sku'	      => $sku,
					'mpn'	      => $mpn,
					'tax'         => $tax,
					'minimum'     => $result['minimum'] > 0 ? $result['minimum'] : 1,
					'rating'      => $rating,
					'href'        => $this->url->link('product/product', 'product_id=' . $result['product_id'])
				);