如何使用PHP动态生成XML文件？

Question

我必须在运行时动态生成一个xml文件.请帮我用PHP动态生成以下XML文件.

<?xml version="1.0" encoding="UTF-8"?>
<xml>
 <track>
     <path>song1.mp3</path>
     <title>Track 1 - Track Title</title>
 </track>
 <track>
     <path>song2.mp3</path>
     <title>Track 2 - Track Title</title>
 </track>
 <track>
     <path>song3.mp3</path>
     <title>Track 3 - Track Title</title>
 </track>
 <track>
     <path>song4.mp3</path>
     <title>Track 4 - Track Title</title>
 </track>
 <track>
     <path>song5.mp3</path>
     <title>Track 5 - Track Title</title>
 </track>
 <track>
     <path>song6.mp3</path>
     <title>Track 6 - Track Title</title>
 </track>
 <track>
     <path>song7.mp3</path>
     <title>Track 7 - Track Title</title>
 </track>
 <track>
     <path>song8.mp3</path>
     <title>Track 8 - Track Title</title>
 </track>

Answer 1

我使用SimpleXMLElement.

<?php

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

for ($i = 1; $i <= 8; ++$i) {
    $track = $xml->addChild('track');
    $track->addChild('path', "song$i.mp3");
    $track->addChild('title', "Track $i - Track Title");
}

Header('Content-type: text/xml');
print($xml->asXML());

Answer 2

要在PHP中创建XML文档,您应该实例化DOMDocument类,创建子节点并将这些节点附加到文档树的正确分支中.

供参考,您可以阅读http://it.php.net/manual/en/book.dom.php

现在我们将快速浏览下面的代码.

• 在第2行,我们创建一个空的xml文档(只需指定xml版本(1.0)和编码(utf8))
• 现在我们需要填充xml树:
  • 我们必须创建一个xmlnode(第5行)
  • 我们必须把它放在正确的位置.我们正在创建根,所以我们将它直接附加到domdocument.
  • 注意create元素将元素追加到节点并返回插入的节点,我们保存此引用以将轨道节点追加到根节点(顺便称为xml).

这些是基础知识,您可以在一行中创建和附加一个节点(例如,第13个),您可以使用dom api执行许多其他操作.它是由你决定.

<?php    
    /* create a dom document with encoding utf8 */
    $domtree = new DOMDocument('1.0', 'UTF-8');

    /* create the root element of the xml tree */
    $xmlRoot = $domtree->createElement("xml");
    /* append it to the document created */
    $xmlRoot = $domtree->appendChild($xmlRoot);

    $currentTrack = $domtree->createElement("track");
    $currentTrack = $xmlRoot->appendChild($currentTrack);

    /* you should enclose the following two lines in a cicle */
    $currentTrack->appendChild($domtree->createElement('path','song1.mp3'));
    $currentTrack->appendChild($domtree->createElement('title','title of song1.mp3'));

    $currentTrack->appendChild($domtree->createElement('path','song2.mp3'));
    $currentTrack->appendChild($domtree->createElement('title','title of song2.mp3'));

    /* get the xml printed */
    echo $domtree->saveXML();
?>

编辑:只是另一个提示:使用xmldocument(dom文档one或simplexml one)而不是打印xml的主要优点是xmltree可以使用xpath查询进行搜索

Answer 3

一个简单的方法是:

<?php
// Send the headers
header('Content-type: text/xml');
header('Pragma: public');
header('Cache-control: private');
header('Expires: -1');
echo "<?xml version=\"1.0\" encoding=\"utf-8\"?>";

echo '<xml>';

// echo some dynamically generated content here
/*
<track>
    <path>song_path</path>
    <title>track_number - track_title</title>
</track>
*/

echo '</xml>';

?>

将其保存为.php

Answer 4

使用FluidXML,您可以非常轻松地生成XML.

$tracks = fluidxml('xml');

$tracks->times(8, function ($i) {
    $this->add([
        'track' => [
            'path'  => "song{$i}.mp3",
            'title' => "Track {$i} - Track Title"
        ]
    ]);

});

https://github.com/servo-php/fluidxml

Answer 5

希望这段代码可以帮助你。简单易行的解决方案

$dom = new DOMDocument();
$dom->encoding = 'utf-8';
$dom->xmlVersion = '1.0';
$dom->formatOutput = true;
$xml_file_name = './movies_list.xml'; //You can give your path to save file.
$root = $dom->createElement('Movies');
    $movie_node = $dom->createElement('movie');
    $attr_movie_id = new DOMAttr('movie_id', '5467');
    $movie_node->setAttributeNode($attr_movie_id);
        
        $child_node_title = $dom->createElement('Title', 'The Campaign');
        $movie_node->appendChild($child_node_title);
        
        $child_node_year = $dom->createElement('Year', 2012);
        $movie_node->appendChild($child_node_year);
        
        $child_node_genre = $dom->createElement('Genre', 'The Campaign');
        $movie_node->appendChild($child_node_genre);
        
        $child_node_ratings = $dom->createElement('Ratings', 6.2);
        $movie_node->appendChild($child_node_ratings);
    $root->appendChild($movie_node);
$dom->appendChild($root);
$dom->save($xml_file_name);

欲了解更多信息，请访问此获取详细信息：https ://www.guru99.com/php-and-xml.html

Answer 6

我看到了 DOM 和 SimpleXML 的示例，但没有看到 XMLWriter 的示例。

请记住，根据我所做的测试，DOM 和 SimpleXML 几乎都比 XMLWriter 慢两倍，对于较大的文件，您应该考虑使用后一种。

这是一个完整的工作示例，清晰简单，满足要求，用 XMLWriter 编写（我相信它会对其他用户有所帮助）：

// array with the key / value pairs of the information to be added (can be an array with the data fetched from db as well)
$songs = [
    'song1.mp3' => 'Track 1 - Track Title',
    'song2.mp3' => 'Track 2 - Track Title',
    'song3.mp3' => 'Track 3 - Track Title',
    'song4.mp3' => 'Track 4 - Track Title',
    'song5.mp3' => 'Track 5 - Track Title',
    'song6.mp3' => 'Track 6 - Track Title',
    'song7.mp3' => 'Track 7 - Track Title',
    'song8.mp3' => 'Track 8 - Track Title',
];

$xml = new XMLWriter();
$xml->openURI('songs.xml');
$xml->setIndent(true);
$xml->setIndentString('    ');
$xml->startDocument('1.0', 'UTF-8');
    $xml->startElement('xml');
            foreach($songs as $song => $track){
                $xml->startElement('track');
                    $xml->writeElement('path', $song);
                    $xml->writeElement('title', $track);
                $xml->endElement();
            }
    $xml->endElement();
$xml->endDocument();
$xml->flush();
unset($xml);