更改XML节点元素值并保存文件

Question

<testimonials> 
    <testimonial id="4c050652f0c3e"> 
     <nimi>John</nimi> 
     <email>test@test.com</email> 
     <text>Some text</text> 
     <active>1</active> 
     </testimonial> 
    <testimonial id="4c05085e1cd4f"> 
     <name>ats</name> 
     <email>some@test.ee</email> 
     <text>Great site!</text> 
     <active>0</akctive> 
    </testimonial> 
</testimonials> 

我有这样的XML晶格结构，我需要找到特定的标识和变化其值一个证明并保存文件。 我有一个PHP脚本根据其ID删除特定的告别赛：

<?php 
$xmlFile = file_get_contents('test.xml'); 
$xml = new SimpleXMLElement($xmlFile); 

$kust_id = $_GET["id"]; 

foreach($xml->testimonial as $story) { 
    if($story['id'] == $kust_id) { 
     $dom=dom_import_simplexml($story); 
     $dom->parentNode->removeChild($dom); 

     $xml->asXML('test.xml'); 
     header("Location: newfile.php"); 
    } 
} 
?> 

Answer 1

您可以使用XPath找到特定元素。 SimpleXMLElement->xpath()返回（匹配）SimpleXMLElement对象数组，即您可以访问和更改每个元素的数据，就像在“您的”foreach循环中一样。

<?php 
// $testimonials = simplexml_load_file('test.xml'); 
$testimonials = new SimpleXMLElement('<testimonials> 
    <testimonial id="4c050652f0c3e"> 
     <nimi>John</nimi> 
     <email>test@test.com</email> 
     <text>Some text</text> 
     <active>1</active> 
     </testimonial> 
    <testimonial id="4c05085e1cd4f"> 
     <name>ats</name> 
     <email>some@test.ee</email> 
     <text>Great site!</text> 
     <active>0</active> 
    </testimonial> 
</testimonials>'); 

// there can be only one item with a specific id, but foreach doesn't hurt here 
foreach($testimonials->xpath("testimonial[@id='4c05085e1cd4f']") as $t) { 
    $t->name = 'LALALA'; 
} 

echo $testimonials->asXML(); 
// $testimonials->asXML('test.xml'); 

打印

<?xml version="1.0"?> 
<testimonials> 
    <testimonial id="4c050652f0c3e"> 
     <nimi>John</nimi> 
     <email>test@test.com</email> 
     <text>Some text</text> 
     <active>1</active> 
     </testimonial> 
    <testimonial id="4c05085e1cd4f"> 
     <name>LALALA</name> 
     <email>some@test.ee</email> 
     <text>Great site!</text> 
     <active>0</active> 
    </testimonial> 
</testimonials>