php - PHP通过Xml节点循环

Question

我有Xml文件，例如

<response>
<tag1>
    <item>
        <id>106</id>
        <title>DG</title>
    </item>
    <item>
        <id>105</id>
        <title>AC</title>
    </item>
</tag1>
<tag2>
    <item>
        <id>1</id>
        <title>DjG</title>
    </item>
    <item>
        <id>15</id>
        <title>AoC</title>
    </item>
</tag2>
</response>

我尝试使用此代码提取ID和标题

$dom = new DomDocument();
    $dom->load('xml.xml');
    $xpath = new DOMXPath($dom);

    foreach($xpath->evaluate('//response/*') as $node){
    $params =$xpath->evaluate('//response/' .$node->nodeName . '/item/*');
        foreach($params as $child) {
            echo $node->nodeName ." = " .$child->nodeName ." = " .$child->nodeValue ."\n<br>";
        }
    }

但是我得到这样的结果

<br>tag1 = id = 106
<br>tag1 = title = DG
<br>tag1 = id = 105
<br>tag1 = title = AC
<br>tag2 = id = 1
<br>tag2 = title = DjG
<br>tag2 = id = 15
<br>tag2 = title = AoC

但是我需要这样


标签1 = 106 = DG
标签1 = 105 = AC
tag2 = 1 = DjG
tag2 = 15 = AoC

Answer 1

在第二个foreach上，仅以该$node->nodeName为目标，然后在内部的foreach目标上，每个ID都具有一个标题。

foreach($xpath->evaluate('//response/*') as $node) {
    $tag = $node->nodeName;
    $params = $xpath->evaluate("//$tag/*");
    foreach($params as $child) {
        $id = $xpath->evaluate('string(./id)', $child);
        $title = $xpath->evaluate('string(./title)', $child);
        echo $tag ." = " .$id ." = " .$title ."\n<br>";
    }
}

Sample Output

或SimpleXML版本：

$xml = simplexml_load_file('xml.xml');
foreach($xml as $tag =>$node) {
    foreach($node as $item => $child) {
        echo $tag ." = " .$child->id ." = " .$child->title ."\n<br>";
    }
}

Sample Output