How do I pass parameters through Curl?

Question

Colleagues,

I’m rephrasing my question. I have a client I need to integrate another site with. I’m using Curl for this. But instead of the user using the access of the other site, the integration would make the user when logging into our site, would have access to the content of his site, without needing to login again. I’m using the following command:

 // Inicia o cURL
$ch = curl_init();
// Define a URL original (do formulário de login)
$campos = array("login"=>$jmUsuario->email,"classroom_id"=>$jmUsuario->email,"sign"=>$sign);
$parametros = json_encode($campos);
curl_setopt($ch, CURLOPT_URL, 'http://www.siteX.com.br/api/auth/');
curl_setopt($ch, CURLOPT_POSTFIELDS, $parametros);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT,0);
curl_setopt($ch, CURLOPT_POST, 0);
$content = curl_exec($ch);
//$response = curl_getinfo($ch, CURLINFO_HTTP_CODE);
echo $content;

Answer 1

Step 1

In this passage

$campos = array("login"=>$jmUsuario->email,"classroom_id"=>$jmUsuario->email,"sign"=>$sign);
$parametros = json_encode($campos);

Remove that line

$parametros = json_encode($campos);

Step 2

On the line
curl_setopt($ch, CURLOPT_POSTFIELDS, $parametros);

Exchange for
curl_setopt($ch, CURLOPT_POSTFIELDS, $campos);

Explanation:

CURLOPT_POSTFIELDS expects an array or string in url format encoded.

Obs:

This may not be the solution to the problem because it is not clear in the question where the problem is.
Nevertheless, it is a suggestion to correct a visible error.

Another problem in the code you posted is in this excerpt

curl_setopt($ch, CURLOPT_POST, 0);

I assume the data should be sent by the method POST due to parameter CURLOPT_POSTFIELDS, so I suggest you change it to

curl_setopt($ch, CURLOPT_POST, true);

If you need to follow a redirect, set the following parameters:

curl_setopt($ch, CURLOPT_TIMEOUT, 5); // tempo em segundos
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5); // em segundos
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); // true: permite redirecionamento
curl_setopt($ch, CURLOPT_MAXREDIRS, 1); // quantidade limite de redirecionamentos permitidos

For more options, see the list of parameters in the documentation: http://php.net/manual/en/function.curl-setopt.php