php operation XML read data and write data implementation code

xml file

<?xml version="1.0" encoding="utf-8"?>
 
<vip>
 <id>23</id>
 <username> Happy Luffy </username>
 <sex> Male </sex>
 <face>face/43.jpg</face>
 <email>123@qq.com</email>
 <qq>1212121212</qq> 
</vip>

php parses XML to get the value in the tag

/*
 * _get_xml  Obtained XML Documents 
* @access public  Indicates that the function is exposed to the public 
* @param $_xmlfile xml Documents 
* $_html  From XML Array of data fetched from 
* */
function _get_xml($_xmlfile){
  $_html = array();
  if(file_exists($_xmlfile)){
    $_xml = file_get_contents($_xmlfile);
    preg_match_all('/<vip>(.*)<\/vip>/', $_xml,$_dom);    
    foreach($_dom[1] as $_value){
      preg_match_all('/<id>(.*)<\/id>/', $_value,$_id);
      preg_match_all('/<username>(.*)<\/username>/', $_value,$_username);
      preg_match_all('/<sex>(.*)<\/sex>/', $_value,$_sex);
      preg_match_all('/<face>(.*)<\/face>/', $_value,$_face);
      preg_match_all('/<email>(.*)<\/email>/', $_value,$_email);
      preg_match_all('/<qq>(.*)<\/qq>/', $_value,$_qq);
      $_html['id'] = $_id[1][0];
      $_html['username'] = $_username[1][0];
      $_html['sex'] = $_sex[1][0];
      $_html['face'] = $_face[1][0];
      $_html['email'] = $_email[1][0];
      $_html['qq'] = $_qq[1][0];
    }
  }else{
    _alert_back(" File does not exist ");
  }
  return $_html;
}

php writes data to an XML file

/*
 * _set_xml Write information to XML Documents 
* @access public  Indicates that the function is exposed to the public 
* @param $_xmlfile xml Documents 
* @param $_clean  An array of information to write 
* */
function _set_xml($_xmlfile,$_clean){
  $_fp = @fopen('newuser.xml','w');
  if(!$_fp){
    exit(' System error, file does not exist! ');
  }
  flock($_fp,LOCK_EX);
  $_string = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\r\t";
  fwrite($_fp, $_string,strlen($_string));
  $_string = "<vip>\r\t";
  fwrite($_fp, $_string,strlen($_string));
  $_string = "\t<id>{$_clean['id']}</id>\r\t";
  fwrite($_fp, $_string,strlen($_string));
  $_string = "\t<username>{$_clean['username']}</username>\r\t";
  fwrite($_fp, $_string,strlen($_string));
  $_string = "\t<sex>{$_clean['sex']}</sex>\r\t";
  fwrite($_fp, $_string,strlen($_string));
  $_string = "\t<face>{$_clean['face']}</face>\r\t";
  fwrite($_fp, $_string,strlen($_string));
  $_string = "\t<email>{$_clean['email']}</email>\r\t";
  fwrite($_fp, $_string,strlen($_string));
  $_string = "\t<qq>{$_clean['url']}</qq>\r\t";
  fwrite($_fp, $_string,strlen($_string));
  $_string = "</vip>";
  fwrite($_fp, $_string,strlen($_string));
  flock($_fp,LOCK_UN);
  fclose($_fp);
}