php的XML文件解释类应用实例

/** 读取xml文件

• @param String $xmlfile
• @return Array
  */
  public function loadXmlFile($xmlfile){
  // get xmlfile content
  $xmlstring = file_exists($xmlfile)? file_get_contents($xmlfile) : '';
  // parser xml
  list($flag,$data) = $this->parser($xmlstring);
  return $this->response($flag,$data);
  }

/** 读取xmlstring

• @param String $xmlstring
• @return Array
  */
  public function loadXmlString($xmlstring){
  // parser xml
  list($flag,$data);
  }

/** 解释xml内容

• @param String $xmlstring
• @return Array
  */
  private function parser($xmlstring){
  $flag = false;
  $data = array();
  // check xml format
  if($this->checkXmlFormat($xmlstring)){
  $flag = true;
  // xml to object
  $data = simpleXML_load_string($xmlstring,'SimpleXMLElement',LIBXML_NOCDATA);
  // object to array
  $this->objectToArray($data);
  }
  return array($flag,$data);
  }

/** 检查xml格式是否正确

• @param String $xmlstring

• @return boolean
  */
  private function checkXmlFormat($xmlstring){
  if($xmlstring==''){
  return false;
  }
  $xml_parser_obj = xml_parser_create();

  if(xml_parse_into_struct($xml_parser_obj,$xmlstring,$vals,$indexs)===1){ // 1:success 0:fail
  return true;
  }else{
  return false;
  }
  }

/** object 转 Array

• @param object $object

• @return Array
  */
  private function objectToArray(&$object){

  $object = (array)$object;

  foreach($object as $key => $value){
  if($value==''){
  $object[$key] = "";
  }else{
  if(is_object($value) || is_array($value)){
  $this->objectToArray($value);
  $object[$key] = $value;
  }
  }
  }
  }

/** 输出返回

• @param boolean $flag true:false
• @param Array $data 转换后的数据
• @return Array
  */
  private function response($flag=false,$data=array()){
  return array($flag,$data);
  }
  }
  ?>

'; 
$xml_parser = new XMLParser(); 
echo "response xmlfilern"; 
list($flag,$xmldata) = $xml_parser->loadXmlFile($xmlfile); 
if($flag){ 
  print_r($xmldata); 
} 
echo "response xmlstringrn"; 
list($flag,$xmldata) = $xml_parser->loadXmlString($xmlstring); 
if($flag){ 
  print_r($xmldata); 
} 
echo '