Php 使用LTI将等级数据发送回LMS
我创建了一个支持LTI的工具,在将数据发送回LMS(如Desire2Learn)时遇到了一些问题。仅根据我的理解,您就生成了一个包含成绩项目本身的XML负载,并使用cURL通过POST将其发送回LMS。我遇到的问题是,我的$result变量返回false,我现在无法理解它。这是我的密码:Php 使用LTI将等级数据发送回LMS,php,lti,Php,Lti,我创建了一个支持LTI的工具,在将数据发送回LMS(如Desire2Learn)时遇到了一些问题。仅根据我的理解,您就生成了一个包含成绩项目本身的XML负载,并使用cURL通过POST将其发送回LMS。我遇到的问题是,我的$result变量返回false,我现在无法理解它。这是我的密码: session_start(); require_once 'blti/blti.php'; require_once 'blti/blti_util.php'; define('OAUTH_CONSUME
session_start();
require_once 'blti/blti.php';
require_once 'blti/blti_util.php';
define('OAUTH_CONSUMER_KEY', 'key');
define('OAUTH_CONSUMER_SECRET', 'secret');
$blti = new BLTI(OAUTH_CONSUMER_SECRET, true, false);
if ($blti->valid) {
$_SESSION['lis_outcome_service_url'] = $_REQUEST['lis_outcome_service_url'];
$_SESSION['lis_result_sourcedid'] = $_REQUEST['lis_result_sourcedid'];
$_SESSION['lis_person_name_given'] = $_REQUEST['lis_person_name_given'];
$_SESSION['oauth_consumer_key'] = $_REQUEST['oauth_consumer_key'];
$_SESSION['oauth_consumer_secret'] = OAUTH_CONSUMER_SECRET;
sendGradeBackToLMS();
}else {
exit($blti->message);
}
function sendGradeBackToLMS() {
$ch = curl_init();
if (!$ch) { exit('curl is not supported!'); }
$url = 'http://localhost/endpoint.php';
$xmldata = getPOXRequest();
$xml = str_replace(
array('MESSAGE_IDENTIFIER', 'SOURCEDID', 'GRADE'),
array(uniqid(), $_SESSION['lis_result_sourcedid'], 0.75),
$xmldata);
$request_headers = array();
$request_headers[] = 'User-Agent: '. $_SERVER['HTTP_USER_AGENT'];
$request_headers[] = 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8';
curl_setopt_array($ch, array(
CURLOPT_URL => $url,
CURLOPT_HTTPHEADER => $request_headers,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => $xml
));
$results = curl_exec($ch);
curl_close($ch);
echo $results;
}
function getPOXRequest() {
return <<<XML
<?xml version = "1.0" encoding = "UTF-8"?>
<imsx_POXEnvelopeRequest xmlns = "http://www.imsglobal.org/services/ltiv1p1/xsd/imsoms_v1p0">
<imsx_POXHeader>
<imsx_POXRequestHeaderInfo>
<imsx_version>V1.0</imsx_version>
<imsx_messageIdentifier>MESSAGE_IDENTIFIER</imsx_messageIdentifier>
</imsx_POXRequestHeaderInfo>
</imsx_POXHeader>
<imsx_POXBody>
<replaceResultRequest>
<resultRecord>
<sourcedGUID>
<sourcedId>SOURCEDID</sourcedId>
</sourcedGUID>
<result>
<resultScore>
<language>en</language>
<textString>GRADE</textString>
</resultScore>
</result>
</resultRecord>
</replaceResultRequest>
</imsx_POXBody>
</imsx_POXEnvelopeRequest>
XML;
}
总结一下,$blti是一个实例,用于检查它是否是有效的基本LTI启动。如果这是真的,我将通过将LTI请求变量存储到会话变量中来初始化会话。接下来,在sendGradeBackToLMS函数中,我将包含grade项的XML数据块发送到$url中给定的路径
任何形式的输入都会有帮助!
谢谢
看看这个
git clone@epipawin感谢您的回复。然而,我不确定你放在这里的一些东西。1.在第3行中,什么是ims blti/OAuthBody.php?第二,在第15行更改$sourcedid有什么意义?谢谢
Try this code,
require_once("ims-blti/OAuthBody.php");
if (version_compare(PHP_VERSION, '5.3.0') >= 0) {
error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
} else {
error_reporting(E_ALL & ~E_WARNING & ~E_NOTICE);
}
$method="POST";
$oauth_consumer_secret = $_REQUEST['secret'];
$sourcedid = $_REQUEST['lis_result_sourcedid'];
if (get_magic_quotes_gpc()) $sourcedid = stripslashes($sourcedid);
$oauth_consumer_key = $_REQUEST['key'];
$endpoint = $_REQUEST['lis_outcome_service_url'];
$content_type = "application/xml";
$body = '<?xml version = "1.0" encoding = "UTF-8"?>
<imsx_POXEnvelopeRequest xmlns = "http://www.imsglobal.org/lis/oms1p0/pox">
<imsx_POXHeader>
<imsx_POXRequestHeaderInfo>
<imsx_version>V1.0</imsx_version>
<imsx_messageIdentifier>MESSAGE</imsx_messageIdentifier>
</imsx_POXRequestHeaderInfo>
</imsx_POXHeader>
<imsx_POXBody>
<OPERATION>
<resultRecord>
<sourcedGUID>
<sourcedId>SOURCEDID</sourcedId>
</sourcedGUID>
<result>
<resultScore>
<language>en-us</language>
<textString>GRADE</textString>
</resultScore>
</result>
</resultRecord>
</OPERATION>
</imsx_POXBody>
</imsx_POXEnvelopeRequest>';
if (isset($_REQUEST['grade'])) {
$operation = 'replaceResultRequest';
$postBody = str_replace(
array('SOURCEDID', 'GRADE', 'OPERATION','MESSAGE'),
array($sourcedid, $_REQUEST['grade'], $operation, uniqid()),
$body);
} else {
exit();
}
$response = sendOAuthBodyPOST($method, $endpoint, $oauth_consumer_key, $oauth_consumer_secret, $content_type, $postBody);