PHP SimpleXML显示不规则的子节点

Question

I have an XML file with an irregular amount of child nodes, and would like to display the question and child nodes. The display for the questions is correct, but I am getting stuck on properly displaying the child nodes.

<Survey>
  <Question ID="1">
    <QuestionText>Question Number 1</SurveyQuestionText>
     <AnswerText>Answer 1</SurveyAnswerText>
     <AnswerText>Answer 2</SurveyAnswerText>
     <AnswerText>Answer 3</SurveyAnswerText>
     <AnswerText>Answer 4</SurveyAnswerText>
     <AnswerText>Answer 5</SurveyAnswerText>
  </Question>   
  <Question ID="2">
    <QuestionText>Question Number 2</SurveyQuestionText>
     <AnswerText>Answer 1</SurveyAnswerText>
     <AnswerText>Answer 2</SurveyAnswerText>
     <AnswerText>Answer 3</SurveyAnswerText>
  </Question>   
  <Question ID="3">
    <QuestionText>Question Number 3</SurveyQuestionText>
     <AnswerText>Answer 1</SurveyAnswerText>
     <AnswerText>Answer 2</SurveyAnswerText>
     <AnswerText>Answer 3</SurveyAnswerText>
     <AnswerText>Answer 4</SurveyAnswerText>
  </Question>   
</Survey>

Here is my code so far

$xml_url = "questions.xml";
$xml = simplexml_load_file($xml_url); 

$x = 1;


foreach($xml->children() as $question) {
   echo $x . ".) " . $question->QuestionText . "
";
   $numAnswers = $question->AnswerText->count();
   echo "count: " . $numAnswers . "
";

   //insert code for display AnswerText

   $x++;    
}

Here is my output so far:

1.) Question Number 1
count: 5
2.) Question Number 2
count: 3
3.) Question Number 3
count: 4

Answer 1

Just add a second inner foreach for the answers:

foreach($xml->children() as $question) {
   echo $x . ".) " . $question->QuestionText . "
";
   $numAnswers = $question->AnswerText->count();
   echo "count: " . $numAnswers . "
";

   //insert code for display AnswerText
   foreach($question->AnswerText as $answers)
       echo $answer;

   $x++;    
}

SimpleXML has a load of very usefull access mechanisms. For example the Iterator, which is used here.

Read all of it here: http://www.php.net/manual/en/simplexml.examples-basic.php