Question

所以我需要使用PHP将3个xml文件合并到一个xml文件中。我对如何做到这一点有点困惑。对此的一些指导将不胜感激。

这些是我需要合并的3个文件：

XML 1

<?xml version="1.0" encoding="UTF-8"?>
<CD_LIST country="USA">
<CD>
  <TITLE>Empire Burlesque</TITLE>
  <ARTIST>Bob Dylan</ARTIST>
  <COUNTRY>USA</COUNTRY>
  <COMPANY>Columbia</COMPANY>
  <PRICE>10.90</PRICE>
  <YEAR>1985</YEAR>
</CD>
</CD_LIST>

XML 2

<?xml version="1.0" encoding="UTF-8"?>
<CD_LIST country="UK UK UK">
<CD>
  <TITLE>Hide your heart</TITLE>
  <ARTIST>Bonnie Tylor</ARTIST>
  <COUNTRY>UK</COUNTRY>
  <COMPANY>CBS Records</COMPANY>
  <PRICE>9.90</PRICE>
  <YEAR>1988</YEAR>
</CD>
<CD>
  <TITLE>Still got the blues</TITLE>
  <ARTIST>Gary More</ARTIST>
  <COUNTRY>UK</COUNTRY>
  <COMPANY>Virgin records</COMPANY>
  <PRICE>10.20</PRICE>
  <YEAR>1990</YEAR>
</CD>
<CD>
  <TITLE>This is US</TITLE>
  <ARTIST>Gary Lee</ARTIST>
  <COUNTRY>UK</COUNTRY>
  <COMPANY>Virgin records</COMPANY>
  <PRICE>12.20</PRICE>
  <YEAR>1990</YEAR>
</CD>
</CD_LIST>

XML 3

<?xml version="1.0" encoding="UTF-8"?>
<CD_LIST country="AU AU">
<CD>
  <TITLE>Whispering Jack</TITLE>
  <ARTIST>John Farnham</ARTIST>
  <COUNTRY>AU</COUNTRY>
  <COMPANY> Farnham's studio </COMPANY>
  <PRICE>22.00</PRICE>
  <YEAR>1986</YEAR>
</CD>
<CD>
  <TITLE>Innocent Eyes</TITLE>
  <ARTIST>Delta Goodrem</ARTIST>
  <COUNTRY>AU</COUNTRY>
  <COMPANY> Delta Goodrem studio </COMPANY>
  <PRICE>13.50</PRICE>
  <YEAR>2008</YEAR>
</CD>
</CD_LIST>

最终输出必须包含以下行：

<?xml version="1.0" encoding="UTF-8"?>

Answer 1

因为简单地尝试合并文档存在一个小问题，因为每个文档都有一个具有不同属性的文档根...

<CD_LIST country="AU AU">
<CD_LIST country="UK UK UK">
<CD_LIST country="USA">

所以有两个可能性，一个是创建一个位于其上方的新标签并复制完整内容，或者第二个是仅复制新根元素下的所有CD元素。

这段代码可以在新的根目录下将它们合并在一起......

function mergeFile ( DOMDocument $target, $fileName )    {
    $source = new DOMDocument();
    $source->load($fileName);

    $import = $target->importNode($source->documentElement, true);
    $target->documentElement->appendChild($import);
}

$target = new DOMDocument();
$target->loadXML('<?xml version="1.0" encoding="utf-8"?><CD_LIST></CD_LIST>');
mergeFile($target, "NewFile.xml");
mergeFile($target, "NewFile1.xml");
mergeFile($target, "NewFile2.xml");

$target->save("out.xml");

创建一个像......

的文档

<?xml version="1.0" encoding="utf-8"?>
<CD_LIST>
    <CD_LIST country="USA">
        <CD>
            <TITLE>Empire Burlesque</TITLE>
            <ARTIST>Bob Dylan</ARTIST>
            <COUNTRY>USA</COUNTRY>
            <COMPANY>Columbia</COMPANY>
            <PRICE>10.90</PRICE>
            <YEAR>1985</YEAR>
        </CD>
    </CD_LIST>
    <CD_LIST country="UK UK UK">
        <CD>

第二个选项是......

function mergeFile2 ( DOMDocument $target, $fileName )    {
    $source = new DOMDocument();
    $source->load($fileName);

    foreach ( $source->getElementsByTagName("CD") as $cd )   {
        $import = $target->importNode($cd, true);
        $target->documentElement->appendChild($import);
    }
}

$target = new DOMDocument();
$target->loadXML('<?xml version="1.0" encoding="utf-8"?><CD_LIST></CD_LIST>');
mergeFile2($target, "NewFile.xml");
mergeFile2($target, "NewFile1.xml");
mergeFile2($target, "NewFile2.xml");

$target->save("out2.xml");

...创建

<?xml version="1.0" encoding="utf-8"?>
<CD_LIST>
    <CD>
        <TITLE>Empire Burlesque</TITLE>
        <ARTIST>Bob Dylan</ARTIST>
        <COUNTRY>USA</COUNTRY>
        <COMPANY>Columbia</COMPANY>
        <PRICE>10.90</PRICE>
        <YEAR>1985</YEAR>
    </CD>
    <CD>
        <TITLE>Hide your heart</TITLE>
        <ARTIST>Bonnie Tylor</ARTIST>
        <COUNTRY>UK</COUNTRY>

如何使用PHP将3个XML文件合并为一个xml？

1 个答案: