我有两个函数，分别工作，但当结合第二个输出从第一个cURL调用的结果

我正在尝试设置fastspring订阅支付处理。

我有以下文件，其中包含2个函数。第一种是通过cURL调用API，获取基本的订单信息。订单函数返回的订阅引用中的第二页，并获取一些订阅信息。

这两个函数单独运行时都能正常工作。但是当一起运行时，第二个函数不工作，并且输出第一个cURL调用的结果?

<?php
//order reference..
$OrderReference = 'QUI110930-3371-94207B';
//UNCOMMENT THIS IF JUST WANT TO TEST getSubscriber function on its own..
//$SubscriptionReference1 = 'QUI110926-3371-68125S';
getOrder ( $OrderReference );
getSubscription ( $SubscriptionReference1 );
//test our variaables for getOrder..
echo '<br/>1:' . $OrderReferrer;
echo '<br/>2:' . $beginDate;
echo '<br/>3:' . $display;
echo '<br/>4:' . $value;
echo '<br/>5:' . $productDisplay;
echo '<br/>7:' . $SubscriptionReference;
echo '<br/><br/><br/>';
//test our variaables for getSubscriber
echo '<br/>1:' . $nextPeriodDate;
echo '<br/>2:' . $subscriptionUrlDetail;
echo '<br/><br/><br/>';
print_r ( $test );
function getOrder($OrderReference) {
    $username = 'my_username';
    $pass = 'my_password';
    //Initialize handle and set options

    $payload = '-i -X GET -u ' . $username . ':' . $pass;
    $requrl = 'https://api.fastspring.com/company/quizba/order/' . $OrderReference;
    define ( 'XML_PAYLOAD', $payload );
    define ( 'XML_POST_URL', $requrl );
    $ch = curl_init ();
    curl_setopt ( $ch, CURLOPT_URL, XML_POST_URL );
    curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 );
    curl_setopt ( $ch, CURLOPT_TIMEOUT, 10 );
    curl_setopt ( $ch, CURLOPT_USERPWD, $username . ':' . $pass );
    curl_setopt ( $ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC );
    curl_setopt ( $ch, CURLOPT_HTTPHEADER, array ('Content-type: Application/xml' ) );
    curl_setopt ( $ch, CURLOPT_SSL_VERIFYHOST, 0 );
    curl_setopt ( $ch, CURLOPT_SSL_VERIFYPEER, 0 );
    //Execute the request and also time the transaction

    $result = curl_exec ( $ch );
    if ($result == '') {
        $result = curl_exec ( $ch );
    }
    //Check for errors

    if (curl_errno ( $ch )) {
        $resultMsg = 'ERROR -> ' . curl_errno ( $ch ) . ': ' . curl_error ( $ch );
    } else {
        $returnCode = ( int ) curl_getinfo ( $ch, CURLINFO_HTTP_CODE );
        switch ($returnCode) {
            case 404 :
                $resultMsg = 'ERROR -> 404 Not Found';
                break;
            case 200 :
                break;
            default :
                $resultMsg = 'HTTP ERROR -> ' . $returnCode;
                break;
        }
    }
    //Assign the variables..
    $resultArray = simplexml_load_string ( $result );
    global $OrderReferrer;
    $OrderReferrer = $resultArray->referrer [0];
    global $beginDate;
    $beginDate = $resultArray->statusChanged [0]; //needs to be modified..             
    global $display;
    $display = $resultArray->status [0];
    global $productDisplay;
    $productDisplay = $resultArray->orderItems->orderItem [0]->productDisplay [0];
    global $value;
    $value = $resultArray->total [0];
    global $SubscriptionReference;
    $SubscriptionReference = $resultArray->orderItems->orderItem [0]->subscriptionReference [0];
    //Close the handle

    curl_close ( $ch );
}
//get the subscription details
function getSubscription($SubscriptionReference) {
    $username = 'my_username';
    $pass = 'my_password';
    $payload = '-i -X GET -u ' . $username . ':' . $pass;
    $requrl = 'https://api.fastspring.com/company/quizba/subscription/' . $SubscriptionReference;
    define ( 'XML_PAYLOAD', $payload );
    define ( 'XML_POST_URL', $requrl );
    $newCh = curl_init ();
    curl_setopt ( $newCh, CURLOPT_URL, XML_POST_URL );
    curl_setopt ( $newCh, CURLOPT_RETURNTRANSFER, 1 );
    curl_setopt ( $newCh, CURLOPT_TIMEOUT, 10 );
    curl_setopt ( $newCh, CURLOPT_USERPWD, $username . ':' . $pass );
    curl_setopt ( $newCh, CURLOPT_HTTPAUTH, CURLAUTH_BASIC );
    curl_setopt ( $newCh, CURLOPT_HTTPHEADER, array ('Content-type: Application/xml' ) );
    curl_setopt ( $newCh, CURLOPT_SSL_VERIFYHOST, 0 );
    curl_setopt ( $newCh, CURLOPT_SSL_VERIFYPEER, 0 );
    //Execute the request and also time the transaction

    $newResult = curl_exec ( $newCh );
    if ($newResult == '') {
        $newResult = curl_exec ( $newCh );
    }
    //Check for errors

    if (curl_errno ( $newCh )) {
        $newResultMsg = 'ERROR -> ' . curl_errno ( $newCh ) . ': ' . curl_error ( $newCh );
    } else {
        $returnCode = ( int ) curl_getinfo ( $newCh, CURLINFO_HTTP_CODE );
        switch ($returnCode) {
            case 404 :
                $newResultMsg = 'ERROR -> 404 Not Found';
                break;
            case 200 :
                break;
            default :
                $newResultMsg = 'HTTP ERROR -> ' . $returnCode;
                break;
        }
    }
    //Assign the variables..

    global $test;
    $test = $newResult;
    //$newResultArray = new SimpleXMLElement($newResult, NULL, FALSE);
    $newResultArray = simplexml_load_string ( $newResult );
    global $nextPeriodDate;
    $nextPeriodDate = $newResultArray->nextPeriodDate [0]; //needs to be modified..                 
    global $subscriptionUrlDetail;
    $subscriptionUrlDetail = $newResultArray->customerUrl [0];
    //Close the handle

    curl_close ( $newCh );
}