how can load $text_items varialble in footer.tpl?

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$_['your_text_variable'] = 'Text to appear in your footer';

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$this->data['text_variable'] = $this->language->get('your_text_variable');

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<?php echo $text_variable; ?>

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if (substr($this->language->get('your_text_variable'), 0) == 0):
	$this->data['your_image'] = '<img src="catalog/view/theme/default/image/emptycart.png">';
else:
	$this->data['your_image'] = '<img src="catalog/view/theme/default/image/cart.png">';
endif;

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<?php echo $your_image; ?>

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<span id="cart-total"><?php echo $text_items; ?></span></a></div>

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$_['text_items']    = '%s item(s) - %s';

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// Totals
$this->load->model('setting/extension');

$total_data = array();					
$total = 0;
$taxes = $this->cart->getTaxes();

// Display prices
if (($this->config->get('config_customer_price') && $this->customer->isLogged()) || !$this->config->get('config_customer_price')) {
	$sort_order = array(); 
	
	$results = $this->model_setting_extension->getExtensions('total');
	
	foreach ($results as $key => $value) {
		$sort_order[$key] = $this->config->get($value['code'] . '_sort_order');
	}
	
	array_multisort($sort_order, SORT_ASC, $results);
	
	foreach ($results as $result) {
		if ($this->config->get($result['code'] . '_status')) {
			$this->load->model('total/' . $result['code']);

			$this->{'model_total_' . $result['code']}->getTotal($total_data, $total, $taxes);
		}
		
		$sort_order = array(); 
	  
		foreach ($total_data as $key => $value) {
			$sort_order[$key] = $value['sort_order'];
		}

		array_multisort($sort_order, SORT_ASC, $total_data);			
	}		
}

$this->data['text_items'] = sprintf($this->language->get('text_items'), $this->cart->countProducts() + (isset($this->session->data['vouchers']) ? count($this->session->data['vouchers']) : 0), $this->currency->format($total));

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<?php echo $text_items; ?>

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$this->language->load('module/cart');

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$this->data['text_variable'] = $this->language->get('your_text_variable');

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$this->language->load('product/product');