lib/Api/Customer.php
public function getListCustomersByEmail(string $customerEmail): array
    {
        $cacheKey = sprintf('zoho_customer_%s', md5($customerEmail));
        $hit = $this->getFromCache($cacheKey);

        if (false === $hit) {
            $response = $this->sendRequest('GET', sprintf('customers?email=%s', $customerEmail));

            $result = $this->processResponse($response);

            $customers = $result['customers'];

            $this->saveToCache($cacheKey, $customers);

            return $customers;
        }

        return $hit;
    }
public function getListCustomersByEmail(string $customerEmail): array
    {
        $cacheKey = sprintf('zoho_customer_%s', md5($customerEmail));
        $hit = $this->getFromCache($cacheKey);

        if (false === $hit) {
            $response = $this->sendRequest('GET', sprintf('customers?email=%s', $customerEmail));

            $result = $this->processResponse($response);

            $customers = $result['customers'];

            $this->saveToCache($cacheKey, $customers);

            return $customers;
        }

        return $hit;
    }
@param string $customerEmail

@return array