php操作XML、读取数据和写入数据的实现代码

<?xml version="1.0" encoding="utf-8"?>      <vip>   <id>23</id>   <username>开心的路飞</username>   <sex>男</sex>   <face>face/43.jpg</face>   <email>123@qq.com</email>   <qq>1212121212</qq>  </vip>

/*   * _get_xml 获取的XML文件  * @access public 表示函数对外公开  * @param $_xmlfile xml文件  * $_html 从XML中取出的数据数组  * */  function _get_xml($_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("文件不存在");    }    return $_html;  }

php向XML文件中写入数据

/*   * _set_xml将信息写入XML文件  * @access public 表示函数对外公开  * @param $_xmlfile xml文件  * @param $_clean 要写入的信息的数组  * */  function _set_xml($_xmlfile,$_clean){    $_fp = @fopen('newuser.xml','w');    if(!$_fp){      exit('系统错误，文件不存在！');    }    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);  }

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