如何在 PHP 和 XML 中使用 foreach (simplexml)
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/4637617/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to use foreach with PHP & XML (simplexml)
提问by Hakan
Anyone that knows PHP and XML out there? Then please have a look!
有人知道 PHP 和 XML 吗？那么请看一看！
This is my PHP code:
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>
<? } ?>
This is mys XML file:
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>
The outcome of the code above is:
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>
I want it to be like this (see category on the first movie):
我希望它是这样的（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>
Note: Also I wonder how to get the comma between the words, but without a comma on the last word...
注意：我还想知道如何在单词之间使用逗号，但最后一个单词上没有逗号...
回答by Jonah
Try this.
尝试这个。
<?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>';
}
?>
回答by Sebastian Viereck
this is how you use foreach with an simplexmlElement:
这是将 foreach 与 simplexmlElement 一起使用的方式：
$xml = simplexml_load_file("movies.xml");
foreach ($xml->children() as $children) {
echo $children->name;
}
回答by Sebastian Viereck
<?php
$cat_out='';
foreach($movie->regions->region->categories->categorie as $cat){
$cat_out.= $cat.',';
}
echo rtrim($cat_out,',');
?>
回答by Dan Lugg
You need to iterate through the categorieelements too, in the same way you've iterated through movies.
您也需要遍历categorie元素，就像遍历movies.
echo '<p>';
foreach($movie->regions->region->categories->categorie as $categorie){
echo $categorie . ', ';
}
echo '</p>';
You'll probably want to trim the trailing ,as well.
您可能还想修剪尾随,。
The method mentioned in my comment:
我的评论中提到的方法：
$categories = $movie->regions->region->categories->categorie;
while($category = current($categories)){
echo $category . next($categories) ? ', ' : '';
}
回答by dqhendricks
<? foreach($movie->regions->region->categories->categorie as $category) { ?>
<p>Categori: <?= $category ?></p>
<? } ?>
回答by prodigitalson
function categoryList(SimpleXmlElement $categories){
$cats = array();
foreach($categories as $category){
$cats[] = (string) $category;
}
return implode(', ', $cats);
}
Then you can jsut call it from your loop like:
然后你可以从循环中调用它，如：
<? echo categoryList($movie->regions->region->categories); ?>
Using an array and imploderemoves the need for logic of counting and detecting the last category.
使用数组并implode消除对计数和检测最后一个类别的逻辑的需要。
Isolating it in a function makes it easier to maintain and is less confusing than nesting the loop (though admittedly nested loops arent thatconfusing).
将它隔离在一个函数中使它更容易维护并且比嵌套循环更容易混淆（尽管诚然嵌套循环并不那么令人困惑）。
回答by Ajay Kumar
Try This one
试试这个
$xml = ... // Xml file data
$Json = Xml_to_Json($xml);
$array = json_decode($Json,true);
echo '<pre>'; print_r($array);
foreach ($array as $key => $value) {
foreach ($value as $key1 => $value1) {
echo '<h2>'.$value1['title'].'</h2>
<p>Year: '.$value1['year'].'</p>
<p>Category: ';
foreach ($value1['regions']['region']['categories']['categorie'] as $categoriekey => $categorie) {
echo $categorie.' ';
}
echo 'Animation</p>
<p>Country: '.$value1['regions']['region']['countries']['country'].'</p>';
}
}
function Xml_to_Json($array){
$xml = simplexml_load_string($array, "SimpleXMLElement", LIBXML_NOCDATA);
$json = json_encode($xml);
return $json;
}
