How do I submit POST data using PHP and cURL?

Question

Can anyone help on how can I do to send the data from a form (POST) to an URL using PHP and cURL?

Using cURL, all I want to accomplish is send the data, I don't want to be redirected nor get any sort of output (HTML nor TEXT) just submit the data.

It would be nice to know if the data has been submitted successfully or not to handle error or redirection.

Additional Info. The reason I think I'm getting redirected is because once I execute the cURL, the destination page, which is a third party website, have a redirect into place confirming the user that their data has been received, and for some reason, when I send my data using cURL their redirection it effects my page, therefore my page it also redirects to their confirmation site.

Thank you all.

Sample Code:

$sub_req_url ="http://domain.com/util/request";
$ch = curl_init($sub_req_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt($ch, CURLOPT_POSTFIELDS,  "id=64&session=1&k=B0EA8835E&firstname=Name&lastname=Lastname&company=Company%20Name&[email protected]&work_phone=123-456-7890");
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_POST, 1);

$resp = curl_exec($ch);
curl_close($ch);

I edit this post to show an example of what I'm using. I should posted the code in first place.

Answer 1

function post($requestJson) {

    $postUrl = $this->endpoint."?access_token=".$this->token;

    //Get length of post
    $postlength = strlen($requestJson);

    //open connection
    $ch = curl_init();

    //set the url, number of POST vars, POST data
    curl_setopt($ch,CURLOPT_URL,$postUrl);
    curl_setopt($ch,CURLOPT_POST,$postlength);
    curl_setopt($ch,CURLOPT_POSTFIELDS,$requestJson);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    $response = curl_exec($ch);

    //close connection
    curl_close($ch);

    return $response;
}