通過php刪除xml節點和所有孩子

Question

我一直在這裏尋找和谷歌，並找到各種代碼，但沒有一個工作。我假設這是因爲它們都不符合我的確切情況。我有一個這樣的xml結構：

<employees> 
     <employee EmpID=""> 
      <first_name></first_name> 
      <last_name></last_name> 
      <ssnum></ssnum> 
      <status></status> 
      <contact_info> 
        <office_phone></office_phone> 
        <email></email> 
        <cell_phone></cell_phone> 
      </contact_info> 
      <access_info level="user"> 
        <username></username> 
        <password></password> 
      </access_info> 
      <department></department> 
      <date_started></date_started> 
      <years></years> 
      <position></position> 
      <salary></salary> 
      <e_increase></e_increase> 
      <e_raise></e_raise> 
      <photo></photo> 
    </employee> 
</employees> 

我有我想要刪除的員工的EmpID存儲在名爲$ ID的變量中。我想徹底刪除該員工。我已經嘗試了諸如：

foreach ($doc->getElementsByTagName('employee') as $employee) { 
    if($employee->getAttribute('EmpID') === $ID) { 
     foreach ($employee as $node) { 
    $node->parentNode->removeChild($node); 
    } 
    } 
} 

和其他循環試圖讓同樣的事情，因爲在這些職位：PHP XML remove element and all children by name和Remove all children from a XML Node PHP DOM，但我一直沒能得到這個能夠成功。

任何幫助，將不勝感激，謝謝。

Answer 1

$ID = ''; 

$dom = new DOMDocument(); 
$dom->loadXML($xml_string); 

$xpath = new DOMXpath($dom); 
$nodes = $xpath->evaluate('/employees/employee[@EmpID = "' . $ID . '"]'); 
foreach ($nodes as $node) { 
    $node->parentNode->removeChild($node); 
} 

Answer 2

你去：

$xml = '<employees> 
     <employee EmpID="1"> 
      <first_name></first_name> 
      <last_name></last_name> 
      <ssnum></ssnum> 
      <status></status> 
      <contact_info> 
        <office_phone></office_phone> 
        <email></email> 
        <cell_phone></cell_phone> 
      </contact_info> 
      <access_info level="user"> 
        <username></username> 
        <password></password> 
      </access_info> 
      <department></department> 
      <date_started></date_started> 
      <years></years> 
      <position></position> 
      <salary></salary> 
      <e_increase></e_increase> 
      <e_raise></e_raise> 
      <photo></photo> 
    </employee> 
    <employee EmpID="2"> 
      <first_name></first_name> 
      <last_name></last_name> 
      <ssnum></ssnum> 
      <status></status> 
      <contact_info> 
        <office_phone></office_phone> 
        <email></email> 
        <cell_phone></cell_phone> 
      </contact_info> 
      <access_info level="user"> 
        <username></username> 
        <password></password> 
      </access_info> 
      <department></department> 
      <date_started></date_started> 
      <years></years> 
      <position></position> 
      <salary></salary> 
      <e_increase></e_increase> 
      <e_raise></e_raise> 
      <photo></photo> 
    </employee> 
</employees>'; 

$doc = new DOMDocument(); 

$doc->loadXML($xml); 

$selector = new DOMXPath($doc); 
$els = $selector->query('/employees//employee'); 

//or 
//$els = $doc->getElementsByTagName('employee'); 


foreach($els as $el){ 
    if($el->getAttribute('EmpID') == 1){ 
     $el->parentNode->removeChild($el); 
    } 
} 

$xml = $doc->saveXML(); 

echo($xml); 

Answer 3

仰望我的xml我有稍微不同的..試試這個。

foreach ($doc->getElementsByTagName('employee') as $employee) { 
    if($employee->getAttribute('EmpID') === $ID) { 
     $employee->parentNode->removeChild($employee); 
     // $dom->save($xmlFile); 
    } 
}