致命错误:在第108行的非对象上调用成员函数http_request()

This is the 2 parts of the code (line 108 is the last line of NoBlankFunctions.php): It seems 2me that everything is fine. It is a declaration of the $responder with newReposnderOAuth (can assume that this class works good, as it is used by many other clients of that company). Than at some point the code is calling to addNewUser, which a part of NoBlankFunctions. Inside this func there is a call to responder, another function in the same php file. And in it's end it collapses when trying to send the http request.

include 'OAuth.php';
include 'responder_sdk.php';
include 'NoBlankFunctions.php';

$client_key = '28FB957EA00B920BE7F83A365CC7ABAF';    
$client_secret = '0B06B5A69DB0F3BCB80A716031C2DE6C';  
$user_key = '1F566B1DE821BE68B5F485F75610F610';  
$user_secret = '5D1406DACCA6B862AD4AE361823BB108';

$responder = new ResponderOAuth($client_key, $client_secret, $user_key, $user_secret);  
.  
.  
.  
addNewUser($registerFirstName, $registerLastName, $registerUserName,
                $registerPass, $registerEmail, $registerGender,
                $registerAge, $registerCountry, "Heb", $registerUserGMT);       

noBlankFunctions.php

function addNewUser($registerFirstName, $registerLastName, $registerUserName,
                $registerPass, $registerEmail, $registerGender,
                $registerAge, $registerCountry, $registerLang, $registerUserGMT)
{   
global $db;
$sql = "INSERT INTO `".$db."`.`users` (`userEmail`, `nickName`, `password`, `firstName`, `lastName`, `State`, `userGMT`, `language`, `gender`, `age`, `currentDay`, `dateForCurrentDay`, `isUserCheck`, `isUserDone`, `isUserPayed`)
        VALUES ('".$registerEmail."', '".$registerUserName."', '".$registerPass."', '".$registerFirstName."', '".$registerLastName."', '".$registerCountry."', '".$registerUserGMT."', '".$registerLang."', '".$registerGender."', '".$registerAge."', '0', '".date("Y/m/d")."', '0', '0', '0');";
$result = mysql_query($sql);

if ($registerLang == 'En')
{
    $listNum = 37742;
}
elseif($registerGender == 'Male')
{
    $listNum = 37713;
}
else
{
    $listNum = 37741;
}
responder($registerEmail, $registerFirstName, $listNum);
}

function responder($userMail, $userFirstName, $listNum)
{
    $post_data = array(
        'subscribers' => json_encode(
            array(
                array(
                    'EMAIL' => $userMail,
                    'NAME' => $userFirstName
                )
            )
        )
    );
$response = $responder->http_request('lists/'.$listNum.'/subscribers', 'post', $post_data);
}

Any ideas?

The error message is saying that $responder is not an object, in other words, it has not been instantiated; trying to access the method http_request of non-object is then obviously not going to work.

I noticed that you instantiated $responder, but then you try to reference $responder from inside the function responder in the file noBlankFunctions.php. I feel like you are referencing the local scope of that $responder variable, which is not an object. If you tried declaring $responder with a global pre-fix that should reference the original $responder variable you instantiated above.

gloabl $responder

Variable scope

$responder is not defined inside the scope of the function.

Either (in order from most to least preferable) pass it as an additional argument, or add global $responder somewhere in the function body (before attempting to access it), or access $GLOBALS['responder'].