php中实现xml与mysql数据相互转换的方法

php  /  管理员 发布于 7年前   159

本文实例讲述了php中实现xml与mysql数据相互转换的方法。分享给大家供大家参考。具体分析如下：

这里提供了一个mysql2xml转换类,可以快速的把xml转换成mysql同时反之也可以把mysql转换成xml,下面看代码.

mysql2xml.php类文件,用于备份MySQL数据的,代码如下:

复制代码 代码如下:

class MySQL2XML {
        protected $conn;
        protected $result;
        protected $tables;
        protected $saveFolder = 'datas/';
        
        public function __construct($config = NULL) {
                if($config !== NULL && is_array($config)) {
                        $this->connect($config);
                }
        }
        
        public function connect($config) {
                $this->conn = mysql_connect($config['host'], $config['username'], $config['password']);
                if($this->conn) {
                        mysql_select_db($config['database']);
                        return true;
                }
                return false;
        }
        
        public function setSaveFolder($folder) {
                if(is_dir($folder)) {
                        $this->saveFolder = rtrim(str_replace("\", "/", $folder),'/');
                        return true;
                }
                return false;
        }
        
        public function setTables($tables) {
                if(is_array($tables)) {
                        $this->tables = $tables;
                        return true;
                }
                return false;
        }
        
        public function query($query) {
                if(!isset($query) || trim($query) == '') return false;
                $this->result = mysql_query($query);
                if($this->result) return true;
                return false;
        }
        
        public function toXML() {
                if(!isset($this->tables)) return false;
                foreach($this->tables as $table) {
                        $file = $this->saveFolder.$table.'.xml';
                        $fp = @fopen($file, 'w');
                        if(!$fp) exit('Can not write file');
                        fwrite($fp, $this->tableToXML($table));
                        fclose($fp);
                        unset($fp);
                }
                return true;
        }
        
        public function tableToXML($table) {
                header("content-type:text/xml;");
                $xml = "nn";
                $fields = $this->getFields($table);
                $datas = $this->getDatas($table);
                $cdata = array();
                foreach($datas as $data) {
                        foreach($data as $key => $value)
                                $cdata[$key][] = $value;
                }
                foreach($fields as $element) {
                        $xml .= "tn";
                        foreach($cdata[$element['Field']] as $value) {
                                $xml .= "tt{$value}n";
                        }
                        $xml .= "tn";
                }
                $xml .= '';
                return $xml;
        }
        
        protected function getFields($table) {
                $query = "SHOW FIELDS FROM {$table}";
                $this->query($query);
                return $this->fetchAll();
        }
        
        protected function getDatas($table) {
                $query = "SELECT * FROM {$table}";
                $this->query($query);
                return $this->fetchAll();
        }
        
        protected function fetch() {
                if(is_resource($this->result)) {
                        return mysql_fetch_assoc($this->result);
                }
                return false;
        }
        
        protected function fetchAll() {
                if(is_resource($this->result)) {
                        $return = array();
                        $row = NULL;
                        while($row = mysql_fetch_assoc($this->result)) {
                                $return[] = $row;
                        }
                        return $return;
                }
                return false;
        }
}
?>
调用方法,代码如下:
复制代码 代码如下:

$xml = new MySQL2XML(array('host'=>'localhost', 'username'=>'root', 'password'=>'', 'database'=>'mysql'));
$xml->setTables(array('wp_term_relationships','wp_terms'));//设置备份的表
$xml->setSaveFolder('datas/');//保存备份文件的文件夹
$xml->toXML();//备份开始
?>

希望本文所述对大家的php程序设计有所帮助。

您可能感兴趣的文章:

• PHP实现动态添加XML中数据的方法
• PHP解析xml格式数据工具类示例
• PHP操作XML作为数据库的类
• PHP中使用xmlreader读取xml数据示例
• PHP生成和获取XML格式数据的方法
• php操作XML、读取数据和写入数据的实现代码
• php处理复杂xml数据示例
• PHP XML备份Mysql数据库
• php操作xml并将其插入数据库的实现方法
• PHP XML数据解析代码
• PHP实现动态删除XML数据的方法示例