php - 如何在 PHP 和 XML 中使用 foreach(simplexml)

Question

有人了解 PHP 和 XML 吗？那就请看吧!

这是我的 PHP 代码:

<? $xml = simplexml_load_file("movies.xml");
foreach ($xml->movie as $movie){ ?>

<h2><? echo $movie->title ?></h2>
<p>Year: <? echo $movie->year ?></p>
<p>Categori: <? echo $movie->regions->region->categories->categorie ?></p>
<p>Country: <? echo $movie->countries->country ?></p>

<? } ?>

这是我的 XML 文件:

<?xml version="1.0" encoding="UTF-8"?>
<movies>
 <movie>
  <title>A movie name</title>
  <year>2010</year>
     <regions>
   <region>
    <categories>
      <categorie id="3">Animation</categorie>
      <categorie id="5">Comedy</categorie>
      <categorie id="9">Family</categorie>
     </categories>
    <countries>
     <country id="123">USA</country>
    </countries>
   </region>
  </regions>
 </movie>
 <movie>
  <title>Little Fockers</title>
  <year>2010</year>
     <regions>
   <region>
    <categories>
     <categorie id="5">Comedy</categorie>
             </categories>
        <countries>
         <country id="123">USA</country>
    </countries>
   </region>
  </regions>
 </movie>
</movies>

上面代码的结果是:

<h2>A movie name</h2>
<p>Year: 2010</p>
<p>Category: Animation</p>
<p>Country: USA</p>

<h2>Little Fockers</h2>
<p>Year: 2010</p>
<p>Category: Comedy</p>
<p>Country: USA</p>

我希望它是这样的(参见第一部电影的类别):

<h2>A movie name</h2>
<p>Year: 2010</p>
<p>Category: Animation, Comedy, Family</p>
<p>Country: USA</p>

<h2>Little Fockers</h2>
<p>Year: 2010</p>
<p>Category: Comedy</p>
<p>Country: USA</p>

注意:另外我想知道如何在单词之间获取逗号，但最后一个单词没有逗号......

Answer 1

试试这个。

<?php
$xml = simplexml_load_file("movies.xml");
foreach ($xml->movie as $movie) {

    echo '<h2>' . $movie->title . '</h2>';
    echo '<p>' . $movie->year . '</p>';

    $categories = $movie->regions->region->categories->categorie;

    while ($categorie = current($categories)) {
        echo $categorie;
        echo next($categories) ? ', ' : null;
    }

    echo '<p>' . $movie->countries->country . '</p>';
}
?>