如何合并类别和产品 XML 文件

Question

这是我的类别 XML 文件。从上到下的类别级别：

<categories>
    <category>
        <category id="17" name="Off-Road" />
        <category id="141" name="HPI - Maverick" />
        <category id="453" name="HSP" />
        <category id="412" name="Diger" />
    </category>
    <category>
        <category id="124" name="Benzinli" />
        <category id="125" name="Off-Road" />
        <category id="295" name="MCD Racing" />
        <category id="315" name="RTR" />
        <category id="316" name="Kit Versiyonları" />
    </category>
</categories>  

这是我的产品 XML 文件。只有类别 ID：

<products>
<product>
    <id>001300V4</id>
    <name>MCD RRV4 Competition - No Engine</name>
    <price>1049</price>
    <stock>2</stock>
    <currency>Euro</currency>
    <brand>MCD Racing</brand>
    <description> 
        <![CDATA[......]]> ]]>
    </description>
    <categories>
        <category>316</category>
    </categories>
</product>

如何合并这两个文件并只转换一个xml文件？请帮我。谢谢。

我需要最终的 xml：

<products>
    <product>
        <id>001300V4</id>
        <name>MCD RRV4 Competition - No Engine</name>
        <price>1049</price>
        <stock>2</stock>
        <currency>Euro</currency>
        <brand>MCD Racing</brand>
        <description><![CDATA[......]]></description>
        <categories>
            <category>Benzinli</category>
            <category>Off-Road</category>
            <category>MCD Racing</category>
            <category>Kit Versiyon</category>
        </categories>
    </product>
</products>

Answer 1

请检查以下代码。什么是错误：

脚本链接：https://hobiall.com/xml/xml_combine.php 最终 XML 链接：https://hobiall.com/xml/final.xml（但产品文件相同）

<?php
$category_dosyasi_orj="https://hobiall.com/xml/categories.xml"; //Kategori dosyasının xml linki
$products_dosyasi_orj="https://hobiall.com/xml/products.xml"; //Ürün dosyasının xml linki
$final_xml="/srv/users/serverpilot/apps/hobiall/public/xml/final.xml"; // Save path and file name


/* Init DOMDocuments: */    
                                                #01
$categories = new DOMDocument('1.0');
$product    = new DOMDocument('1.0');

/* Load XML: */
$categories ->load( $category_dosyasi_orj, LIBXML_NOBLANKS );
$product    ->load( $products_dosyasi_orj, LIBXML_NOBLANKS );
$categories ->formatOutput = True;
$product    ->formatOutput = True;

/* Init xPath: */
$xPathCat   = new DOMXPath( $categories );
$xPathProd  = new DOMXPath( $product );

/* Search Product Category: */                                                              
$prodCat = $xPathProd->query( '/products/product/categories/category' );

if( $prodCat->length > 0 )                                                       
{
$cat = $prodCat->item(0);

/* Search Corresponding Category in Categories: */                           
$found = $xPathCat->query
( "/categories/category/category[@id=\"{$cat->nodeValue}\"]" );

if( $found->length )
{
    foreach( $found->item(0)->parentNode->childNodes as $child )             
    {
        /* Append ChildNode <category>Category Name</category>: */
        $cat->parentNode->appendChild
        (
            $product->createElement( 'category', $child->getAttribute( 'name' ) )
        );
    }
    /* Remove Old Category (numeric): */                                     
    $cat->parentNode->removeChild( $cat );
}
}

$xml= $product->saveXML().PHP_EOL;

$file=fopen($final_xml,"w") or die ("Cant open");
fwrite($file, $xml);
fclose($file);
echo "XML file saved";
?>

Answer 2

使用 DOMDocument 和 DOMXPath，你可以试试这个脚本：

/* Init DOMDocuments: */                                                        #01
$categories = new DOMDocument();
$product    = new DOMDocument();

/* Load XML: */
$categories ->loadXML( $xml1, LIBXML_NOBLANKS );
$product    ->loadXML( $xml2, LIBXML_NOBLANKS );
$categories ->formatOutput = True;
$product    ->formatOutput = True;

/* Init xPath: */
$xPathCat   = new DOMXPath( $categories );
$xPathProd  = new DOMXPath( $product );

/* Search Product Category: */                                                  #02
$prodCat = $xPathProd->query( '/products/product/categories/category' );

if( $prodCat->length > 0 )                                                      #03
{
    $cat = $prodCat->item(0);

    /* Search Corresponding Category in Categories: */                          #04
    $found = $xPathCat->query
    ( "/categories/category/category[@id=\"{$cat->nodeValue}\"]" );

    if( $found->length )
    {
        foreach( $found->item(0)->parentNode->childNodes as $child )            #05
        {
            /* Append ChildNode <category>Category Name</category>: */
            $cat->parentNode->appendChild
            (
                $product->createElement( 'category', $child->getAttribute( 'name' ) )
            );
        }
        /* Remove Old Category (numeric): */                                    #06
        $cat->parentNode->removeChild( $cat );
    }
}

echo $product->saveXML().PHP_EOL;

eval.in demo

1. 我们为类别创建一个DOMDocument，为产品创建一个；然后我们加载相应的 XML（你必须用你的变量名更改 $xml1 和 $xml2；如果你想直接从文件中加载它，你必须使用 ->load( filePath ) 而不是 ->loadXML( var )）；最后，我们初始化两个DOMXPath 来执行简单的查询；

2. 我们执行 xPath 查询以在产品 xml 中找到节点 /products/product/categories/category；

3. 如果查询成功，我们会处理第一个类别项目（此脚本最终会省略其他类别项目，尽管它可以适应多个类别项目），并且

4. 我们执行 xPath 查询以在类别 xml (category[@id=) 中找到产品类别 ID；

1234563实际<category> 产品元素；

5. 在foreach 循环之后，我们删除原始的数字<category> 产品元素并打印出生成的XML。

---

• 查看更多关于Document Object Model
• 查看更多关于DOMXPath

---

编辑：

您的 categories 文件与提供的示例不同。此外，正如您在上面的§3 中看到的，我的脚本仅适用于第一个产品类别匹配。要正确运行您的文件，请按以下方式更改上面的脚本：

(...)
/* Search Product Category: */
foreach( $xPathProd->query( '/products/product/categories' ) as $node )
{
    $prodCat = $xPathProd->query( './category', $node );
    if( $prodCat->length > 0 )
    {
        $cat = $prodCat->item(0);
        $found = $xPathCat->query( "//category[@id=\"{$cat->nodeValue}\"]" );
        if( $found->length )
        {
            foreach( $found->item(0)->parentNode->childNodes as $child )
            {
                /* Append ChildNode <category>Category Name</category>: */
                $cat->parentNode->appendChild
                (
                    $product->createElement( 'category', htmlspecialchars($child->getAttribute( 'name' )) )
                );
            }
            /* Remove Old Category (numeric): */
            $cat->parentNode->removeChild( $cat );
        }
    }
}