Responses is empty while calling web services via zend framework 2.3

I am a newbie in zendframework 2.3. In my app i need to call web services. and i used class ZendHttpClient() … everything is fine… but reponse is empty.. It works in curl call via core php

$request =
'<?xml version="1.0"?>' . "n" .
'<request><login>email</login><password>password</password></request>';

$client = new ZendHttpClient();
$adapter = new ZendHttpClientAdapterCurl();
$adapter->setOptions(array(
'curloptions' => array(
    CURLOPT_POST => 1,
    CURLOPT_SSL_VERIFYPEER => false,
    CURLOPT_POSTFIELDS => $request,
    CURLOPT_RETURNTRANSFER => 1
)
));

$client->setUri("https://xyz/getCountries");
$client->setAdapter($adapter);
$client->setMethod('POST');
$response= $client->send();

echo "<pre>n";
echo htmlspecialchars($response);
echo "</pre>";

Answer

You could use directly the Http Client by setting the CURLOPT_POST and CURLOP_POSTFIELDS options in the Client and not in the Adapter, just like this :

$data = '<?xml version="1.0"?>' . "n" .
        '<request><login>email</login><password>password</password></request>';

$client = new ZendHttpClient('https://xyz/getCountries');
$client->setMethod('POST');
$client->setRawBody($data);
//set the adapter without CURLOPT_POST and CURLOP_POSTFIELDS
$client->setAdapter(new Curl());
$response = $client->send();

And then get the response in output (your code is wrong, you should use $response->getBody()) :

echo "<pre>n";
echo htmlspecialchars($response->getBody());
echo "</pre>";

Here’s a good post on how to use the Curl Http Adapter in Zf2.