根據屬性

Question

從XML中刪除節點我想根據屬性ID刪除圖片節點。 我寫了php代碼，但它不起作用。

<gallery> 
     <organizate> 
     <organization w="3" h="1" space="17"/> 
     <organization w="4" h="2" space="17"/> 
     <organization w="6" h="3" space="7"/> 
     </organizate> 
     <pictures> 
     <picture target="events/preview/10picture1.jpg" title="test1" movie="" text="test1" link="events_calender.php" id="38"/> 
     <picture target="events/preview/8picture7.jpg" title="test2" movie="" text="cxvxc" link="events_calender.php" id="39"/> 
     <picture target="events/preview/5picture10.jpg" title="test3" movie="" text="test3" link="events_calender.php" id="40"/> 
     </pictures> 
    </gallery> 

PHP代碼

$doc = new DOMDocument(); 
$doc->formatOutput = TRUE; 
$doc->preserveWhiteSpace = FALSE; 
$xPath = new DOMXPath($doc); 
$doc->load('../Event_gallery.xml'); 
$query = sprintf('//pictures[./picture[@id="%s"]]', 38); 
foreach ($xPath->query($query) as $node) { 
    $node->parentNode->removeChild($node); 
} 
$doc->save('../Event_gallery.xml'); 

我覺得XPath是不能正常工作。控制未在的foreach

Answer 1

問題將會是你後您通過文檔DOMXPath加載文檔。

變化

$xPath = new DOMXPath($doc); 
$doc->load('../Event_gallery.xml'); 

到

$doc->load('../Event_gallery.xml'); 
$xPath = new DOMXPath($doc); 

那麼它應該工作。

只刪除指定id而不是整個父像素，改變XPath來

//pictures/picture[@id="38"]