转换对象的数组到XML

Question

我有对象的数组，每个人只是一个字符串对，像

$faq[0]->{"question"} = "Here is my question 1"; 
$faq[0]->{"answer"} = "Here is my answer 1"; 
$faq[1]->{"question"} = "Here is my question 2"; 
$faq[1]->{"answer"} = "Here is my answer 2"; 

，我想将其转换成XML，像这样：

<faq> 
    <question>Here is my question 1</question> 
    <answer>Here is my answer 1</answer> 
</faq> 
<faq> 
    <question>Here is my question 2</question> 
    <answer>Here is my answer 2</answer> 
</faq> 

我没有任何问题手动编写一个函数来做到这一点，但它确实感觉应该内置到PHP中，但我无法在任何地方找到它。是否存在某个函数，或者我应该通过编写自己的函数来转换数据？谢谢！

编辑：很多人都建议for循环，并通过数组。这就是我所说的“手动编写函数”的意思。我只是在想，我的情况是通用的是PHP/SimpleXML的可能有一个内置的功能一样

$xml->addContent($faq); 

这将尽一切解析$ FAQ变量，并将其转换为XML。

Answer 1

只需遍历$faq，然后将您的stdClass es转换为数组以添加单个子元素。事情是这样的：

$faqs = []; 

$faqs[0] = new stdClass; 
$faqs[0]->{"question"} = "Here is my question 1"; 
$faqs[0]->{"answer"} = "Here is my answer 1"; 
$faqs[1] = new stdClass; 
$faqs[1]->{"question"} = "Here is my question 2"; 
$faqs[1]->{"answer"} = "Here is my answer 2"; 

$xml = new SimpleXMLElement('<faqs/>'); 
foreach ($faqs as $faq) { 
    $xml_faq = $xml->addChild('faq'); 
    foreach ((array) $faq as $element_name => $element_value) { 
     $xml_faq->addChild($element_name, $element_value); 
    } 
} 

print $xml->asXML(); 

输出：

<?xml version="1.0"?> 
<faqs> 
    <faq> 
     <question>Here is my question 1</question> 
     <answer>Here is my answer 1</answer> 
    </faq> 
    <faq> 
     <question>Here is my question 2</question> 
     <answer>Here is my answer 2</answer> 
    </faq> 
</faqs> 

Answer 2

这里是我的答案，但使用数组，而不是类。

演示：http://blazerunner44.me/test/xml.php

<?php 
header("Content-type: text/xml"); 
$faq = array(); 
$faq[0]['question'] = "Here is my question 1"; 
$faq[0]["answer"] = "Here is my answer 1"; 
$faq[1]["question"] = "Here is my question 2"; 
$faq[1]["answer"] = "Here is my answer 2"; 

$response = new SimpleXMLElement('<response></response>'); 

foreach($faq as $block){ 
    $element = $response->addChild('faq'); 
    $element->addChild('question', $block['question']); 
    $element->addChild('answer', $block['answer']); 
} 

echo $response->asXML(); 
?>