如何从XML标记中恢复项目

Question

I am stuck with getting the value from an XML element list. I wonder if someone here could help?

Here is the problem. I have this XML element:

<sequenceQuestion status="correct" maxPoints="10" maxAttempts="1" awardedPoints="10" usedAttempts="1">
  <direction>Order the following options</direction>
  <answers>
    <answer userDefinedPosition="0">Option 1</answer>
    <answer userDefinedPosition="1">Option 2</answer>
    <answer userDefinedPosition="2">Option 3</answer>
    <answer userDefinedPosition="3">Option 4</answer>
    <answer userDefinedPosition="4">Option 5</answer>
  </answers>
</sequenceQuestion>

I need to print the elements in the tag. For example, I need to print "Option 1", "Option 2", ... , "Option 5" in a webpage by the order they were selected by the user.

If I use this code:

$SequenceQuestionNumber = 1;

foreach($answer_group->answers->answer as $userSequenceQuestion){

if($status!="notAnswered" && isset($userSequenceQuestion->attributes()->userDefinedPosition)) {
    $userDefinedPosition = (string)$userSequenceQuestion->attributes()->userDefinedPosition;
    $values .= "\"" . $userDefinedPosition . "\", ";

I get as answer values "0", "1", "2", "3" and "4". But what I need is not the 'userDefinedPosition" but rather the text associated with it. For "0" I need to print "Option 1", for "1" I need "Option 2", for "3" I need "Option 2", etc...

I have tried to build an array like this:

$answers = (array)$userSequenceQuestion->answer;
$values .= "\"" . $answers[$userDefinedPosition] . "\", ";

but I just get blanks (nothing) printed.

I guess what is messing my reference is the userDefinedPosition inside the tag, but I am not sure on how to get the labels instead of the index numbers.

Answer 1

Ok. So I got it. Thank you all that contributed to an answer. This is the code which writes the user answer ordering:

if($answer_group->getName()=="sequenceQuestion") { //SEQUENCE QUESTION

$SequenceQuestionNumber = 1;

foreach($answer_group->answers->answer as $userSequenceQuestion){

if($status!="notAnswered" && isset($userSequenceQuestion->attributes()->userDefinedPosition)) {
$userDefinedPosition = (int)$userSequenceQuestion->attributes()->userDefinedPosition;
$answers = (string)$answer_group->answers->answer[$userDefinedPosition];
$values .= "\"" . $answers . "\", ";
} else {
$values .= "\"" . $status_notAnswered . "\", ";
}

$SequenceQuestionNumber++;
}