php xml 的基本操作类

 class xmlMessage{
     protected $doc;
     protected $rootKey;
     public function  __construct() {
         $this->doc = new DOMDocument('1.0', 'utf-8');
         $this->doc -> formatOutput = true;
         $status = $this->doc -> createElement('status');//create new key
         $this->rootKey = $status;
         $this->doc->appendChild($status);
     }
     public function createSon($sonName, $value){
     $this->deleteChild($sonName);
     $sonKey = $this->doc -> createElement($sonName);//新建节点
     $content = $this->doc -> createTextNode($value);//节点值
     $sonKey -> appendChild($content);
     $this->rootKey->appendChild($sonKey);
     }
     public function appendNodeValue($tagName, $appendValue){
     if(!$this->hasNodeName($tagName)){
         $this->createSon($tagName, '');
     }
     $this->rootKey->getElementsByTagName($tagName)->item(0)->nodeValue .= "\n".$appendValue;
     }
     public function editNodevalue($tagName, $value){
     if(!$this->hasNodeName($tagName)){
         $this->createSon($tagName, '');
     }
     $this->rootKey->getElementsByTagName($tagName)->item(0)->nodeValue = $value;
     }
     public function deleteChild($tagName){
     if($this->hasNodeName($tagName))
         $this->rootKey -> removeChild($this->rootKey->getElementsByTagName($tagName)->item(0));
     }
     private function hasNodeName($tagName){
     $hasNode = false;
     $tempList = $this->doc->getElementsByTagName($tagName);
     foreach($tempList as $temp){
         if($temp->nodeName == $tagName)
         $hasNode = true;
     }
     return $hasNode;
     }
     public function setNodesByArray($xmlArray){
     $now = getdate(time());
     $dataCreated = $now['year'].'/'.$now['mon'].'/'.$now['mday'].' '.$now['hours'].':'.$now['minutes'].':'.$now['seconds'];
     $this->createSon('language', strtolower($xmlArray['basicInfo']['language']));
     $this->createSon('source', $xmlArray['basicInfo']['source']);
     $this->createSon('resumeUrl', $xmlArray['basicInfo']['resumeUrl']);
     $this->createSon('email', $xmlArray['basicInfo']['email']);
     $this->createSon('resumeGuid', $xmlArray['basicInfo']['resumeGuid']);
     $this->createSon('dateCreated', $dataCreated);
     $this->createSon('success','TRUE');
     }
     public function getXML(){
     return $this->doc->saveXML();
     }
 }