Guzzle3 send raw Post request - php

Question

I am working on project that uses Guzzle3 (v3.9.3), I would like to know how to send a raw post request, I have tried these solutions but none of them worked for me. I am using this Guzzle3 manual.
Solution :
$client = new Client();
$client->setDefaultOption('headers', array(
'Authorization' => 'Bearer '.$token,
'Accept' => 'application/json'
));
$body = '{"filter_":{"user":{"email":"aaa#test.com"}}}';
$req = $client->post($url, array(), $body,
array(
'cert' => array($certification, 'password'),
)
);
$response = json_decode($client->send($req)->getBody(true));
Solution 2 :
$client = new Client();
$client->setDefaultOption('headers', array(
'Authorization' => 'Bearer '.$token,
'Accept' => 'application/json'
));
$body = '{"filter_":{"user":{"email":"aaa#test.com"}}}';
$req = $client->post($url, array(), array(),
array(
'cert' => array($certification, 'password'),
)
);
$req->setBody($body);
$response = json_decode($client->send($req)->getBody(true));
None of them worked for me,
Error : Client error response [status code] 404 [reason phrase] Not Found [url]
I have tried some solutions found in the internet (but for Guzzle6) it works but I don't get the right results (it doesn't take in consideration the filter that I have sent , which is the mail address, so I get all results)
...
$body = array(
'filter_' => array(
'user' => array( "email" => $email )
)
);
$req = $client->post($url, array(),array('body'=> $body),
array(
'cert' => array($certification, 'password'),
)
);
...
On postman the call to WS work.
Thanks in advance

Answer 1

I'm posting the response in case someone need , I had to put all the bloc between try catch
try{
$client = new Client();
$client->setDefaultOption('headers', array(
'Authorization' => 'Bearer '.$token,
));
$body = '{"filter_":{"user":{"email":"aaa#test.com"}}}';
$req = $client->post($url, array(), $body,
array(
'cert' => array($certification, 'password'),
)
);
$response = json_decode($client->send($req)->getBody(true));
catch(Guzzle\Http\Exception\BadResponseException $e){
$response = json_decode($e->getResponse()->getBody(),true);
}