从XML组中恢复属性标记'selected = true'

Question

我再次询问您对XML组和标记的帮助。我会感谢您可能提供的任何意见。提前致谢。

所以，我有这样的XML组：

<multipleResponseQuestion status="correct" maxPoints="10" maxAttempts="1" awardedPoints="10" usedAttempts="1"> 
<direction>Pick the correct option(s):</direction> 
    <answers> 
    <answer correct="true" selected="true">option 1</answer> 
    <answer correct="false" selected="false">option 2</answer> 
    <answer correct="false" selected="false">option 3</answer> 
    <answer correct="false" selected="false">option 4</answer> 
    </answers> 
</multipleResponseQuestion> 

，我想在一个DATABSE写的选项，或由用户选择的选项（可多选）。

我写了这个代码：

if($answer_group->getName()=="multipleResponseQuestion") { //MULTIPLE RESPONSE QUESTION 

$multipleResponseQuestionNumber = 1; 

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

if($status!="notAnswered" && isset($userMultipleResponseQuestion->attributes()->answer)) { 
$userAnswer = (string)$userMultipleResponseQuestion->attributes()->selected; 
    $values .= "\"" . $userAnswer . "\", "; 
    } else { 
    $values .= "\"" . $status_notAnswered . "\", "; 
} 

$columns_create .= $prefix . $questionNumber . "_" . $multipleResponseQuestionNumber . " VARCHAR(50), "; 
$columns_insert .= $prefix . $questionNumber . "_" . $multipleResponseQuestionNumber . ", "; 

$multipleResponseQuestionNumber++; 
} 

所以，我需要恢复“选定=真正的”选项把它们写在数据库中的$ userAnswer。但我无法弄清楚如何调用这个属性。有人可以帮忙吗？

最佳 JPMD

Answer 1

很简单毕竟：

if($status != "notAnswered" 
    && $userMultipleResponseQuestion->attributes()->selected == 'true') 
{ 
    $userAnswer = (string)$userMultipleResponseQuestion; 
}