OpenCart 🇺🇦

$sql = "SELECT * FROM `" . DB_PREFIX . "customer_transaction` WHERE customer_id = '" . (int)$this->customer->getId() . "'";

$sort_data = array(
	'amount',
	'description',
	'date_added'
);

if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
	$sql .= " ORDER BY " . $data['sort'];	
} else {
	$sql .= " ORDER BY date_added";	
}

if (isset($data['order']) && ($data['order'] == 'DESC')) {
	$sql .= " DESC";
} else {
	$sql .= " ASC";
}

if (isset($data['start']) || isset($data['limit'])) {
	if ($data['start'] < 0) {
		$data['start'] = 0;
	}			

	if ($data['limit'] < 1) {
		$data['limit'] = 20;
	}	

	$sql .= " LIMIT " . (int)$data['start'] . "," . (int)$data['limit'];
}

$query = $this->db->query($sql);

return $query->rows;

$query = $this->db->query("SELECT COUNT(*) AS total FROM `" . DB_PREFIX . "customer_transaction` WHERE customer_id = '" . (int)$this->customer->getId() . "'");

return $query->row['total'];

$query = $this->db->query("SELECT SUM(amount) AS total FROM `" . DB_PREFIX . "customer_transaction` WHERE customer_id = '" . (int)$this->customer->getId() . "' GROUP BY customer_id");

if ($query->num_rows) {
	return $query->row['total'];
} else {
	return 0;	
}