php產生xml和轉換[源碼]

　php產生xml就像樹一樣，逐個添加節點，可以在一個父節點下添加多個子節點:

function madexml(){      //擷取模板資訊      $strTempInfo = $this->modelCmsObj->getTemplate('2007');      $arrTemp = explode("#",$strTempInfo);      array_shift($arrTemp);      $arrContents = array();      foreach($arrTemp as $k=>$v)      {          $arrContents[$k]=explode(",",$v);      }    //解析為xml檔案      $objDom = new DOMDocument("1.0");      header("Content-Type: text/plain");       //添加元素和文本節點      $root = $objDom->createElement("recommend");      $objDom->appendChild($root);      foreach($arrContents as $k=>$v)      {  $item = $objDom->createElement("entry");  $root->appendChild($item);  $nextitem1 = $objDom->createElement("simgurl");  $nextitem2 = $objDom->createElement("imgurl");  $nextitem3 = $objDom->createElement("fileurl");  $item->appendChild($nextitem1);  $item->appendChild($nextitem2);  $item->appendChild($nextitem3);  $text1 = $objDom->createTextNode($v[0]);  $text = $objDom->createTextNode($v[1]);  $text2 = $objDom->createTextNode($v[2]);  $nextitem2->appendChild($text1);  $nextitem3->appendChild($text2);  $nextitem1->appendChild($text);  }      echo $objDom->saveXML();  }

simplexml_load_string把xml串轉化為字串

$string = <<     Forty What?  Joe  Jane      I know that's the answer -- but what's the question?      XML;  $xml = simplexml_load_string($string);  var_dump($xml); 

以上代碼將輸出：

SimpleXMLElement Object  (    [title] => Forty What?    [from] => Joe    [to] => Jane    [body] =>     I know that's the answer -- but what's the question?  )  

如果想把xml轉換為數組，先轉換為字串含有索引值的字串，再進行迴圈就可以成為數組：

/**   * xml轉換為數組   * @param unknown_type $xml   */ private function xml_to_array($xml)  {  $array = (array)(simplexml_load_string($xml,'SimpleXMLElement', LIBXML_NOCDATA));  foreach ($array as $key=>$item){  $array[$key]  = $this->struct_to_array((array)$item);  }  return $array;}  private function struct_to_array($item){  if(!is_string($item)) {  $item = (array)$item;  foreach ($item as $key=>$val){  $item[$key]  =  self::struct_to_array($val);  }  }  return $item;  } 

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