Post a reply on a comment in Facebook using cURL PHP / Graph API

Question

I know how to post a feed on the friend's wall. eg:

$url = 'https://graph.facebook.com/' . $fbId . '/feed';

$attachment =  array(
        'access_token'  => $accessToken,
        'message'       => $msg,
        'name'          => $name,
        'link'          => $link,
        'description'   => $desc,
        'picture'       => $logo,
);

// set the target url
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $attachment);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$go = curl_exec($ch);
curl_close ($ch);

$go = explode(":", $go);
$go = str_ireplace('"', '', $go[1]);
$go = str_ireplace('}', '', $go);
return $go;

But I want to know, how to post a reply to the particular feed using cURL PHP or Facebook Graph API. Can anybody help me out from this problem?

Answer 1

Okay, first of all, this is a better way of extracting the id:

$go = json_decode($go, TRUE);
if( isset($go['id']) ) {
// We successfully posted on FB
}

So you would use something like:

$url = 'https://graph.facebook.com/' . $fbId . '/feed';

$attachment =  array(
        'access_token'  => $accessToken,
        'message'       => "Hi",
);

// set the target url
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $attachment);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$go = curl_exec($ch);
curl_close ($ch);

$go = json_decode($go, TRUE);
if( isset($go['id']) ) {
    $url = "https://graph.facebook.com/{$go['id']}/comments";

    $attachment =  array(
            'access_token'  => $accessToken,
            'message'       => "Hi comment",
    );

    // set the target url
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $attachment);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $comment = curl_exec($ch);
    curl_close ($ch);
    $comment = json_decode($comment, TRUE);
    print_r($comment);
}