刪除xml節點取決於多個數組？

我的原始XML文件這樣的（original.xml）

<books>  
     <book> 
      <qty>12</qty> 
      <title>C++</title> 
     </book> 
     <book> 
      <qty>21</qty> 
      <title>PHP</title> 
     </book>  
     </books>  
     <books>  
     <book> 
      <qty>25</qty> 
      <title>Java</title> 
     </book>  
     <book> 
      <qty>32</qty> 
      <title>Python</title> 
     </book> 
     <book> 
      <qty>22</qty> 
      <title>History</title> 
     </book>  
    </books>

我有一個數組使用操縱到新的XML文件（new.xml）

$arr = Array (
    [0] => Array (
     [0] => 12;C++ 
     [1] => 21;PHP 
    )  
    [1] => Array (
     [0] => 25;java 
     [1] => 32;Python 
    ) 
)

依靠上述陣列==> new.xml將如下所示：

//tag `<book>` block has removed because it contain all elements in an array ($arr) 

<books> 
    <book> 
     <qty>22</qty> 
     <title>History</title> 
    </book> 
</books>

來源

2010-12-22 kn3l

所有book元素應該有相同的標籤``，不``，``等等 – 2010-12-22 08:22:18

@Tatu準確。 ``是正確的做法。如果每本書都需要編號，它應該是一個屬性：'` – 2010-12-22 08:25:14

您可以使用DOMDocument和XPath從XML樹中刪除元素：

個

$str = '<content>'.$xml.'</content>'; 

$doc = new DOMDOcument; 
$doc->loadxml($str); 

$xpath = new DOMXpath($doc); 

$arr = array(
    array('12;C++', '21;PHP'), 
    array('25;java', '32;python') 
); 

# Remove elements based on qty and title 
foreach($arr as $items) { 
    foreach($items as $item) { 
     list($qty, $title) = explode(';', $item); 
     foreach($xpath->query('/content/books/book[title="'.$title.'"][qty="'.$qty.'"]') as $book) { 
      $book->parentNode->removeChild($book); 
     } 
    } 
} 

# Remove empty <books> 
foreach($xpath->query('books[count(book)=0]') as $empty) { 
    $empty->parentNode->removeChild($empty); 
} 

header('Content-type: text/xml'); 
echo $doc->savexml();

來源

2010-12-22 08:48:27

刪除xml節點取決於多個數組？

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