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| <?php// +----------------------------------------------------------------------// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]// +----------------------------------------------------------------------// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.// +----------------------------------------------------------------------// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )// +----------------------------------------------------------------------// | Author: liu21st <liu21st@gmail.com>// +----------------------------------------------------------------------namespace Think;/** * ThinkPHP Model模型类 * 实现了ORM和ActiveRecords模式 */class Model {    // 操作状态    const MODEL_INSERT          =   1;      //  插入模型数据    const MODEL_UPDATE          =   2;      //  更新模型数据    const MODEL_BOTH            =   3;      //  包含上面两种方式    const MUST_VALIDATE         =   1;      // 必须验证    const EXISTS_VALIDATE       =   0;      // 表单存在字段则验证    const VALUE_VALIDATE        =   2;      // 表单值不为空则验证    // 当前数据库操作对象    protected $db               =   null;	// 数据库对象池	private   $_db				=	array();    // 主键名称    protected $pk               =   'id';    // 主键是否自动增长    protected $autoinc          =   false;        // 数据表前缀    protected $tablePrefix      =   null;    // 模型名称    protected $name             =   '';    // 数据库名称    protected $dbName           =   '';    //数据库配置    protected $connection       =   '';    // 数据表名(不包含表前缀)    protected $tableName        =   '';    // 实际数据表名(包含表前缀)    protected $trueTableName    =   '';    // 最近错误信息    protected $error            =   '';    // 字段信息    protected $fields           =   array();    // 数据信息    protected $data             =   array();    // 查询表达式参数    protected $options          =   array();    protected $_validate        =   array();  // 自动验证定义    protected $_auto            =   array();  // 自动完成定义    protected $_map             =   array();  // 字段映射定义    protected $_scope           =   array();  // 命名范围定义    // 是否自动检测数据表字段信息    protected $autoCheckFields  =   true;    // 是否批处理验证    protected $patchValidate    =   false;    // 链操作方法列表    protected $methods          =   array('strict','order','alias','having','group','lock','distinct','auto','filter','validate','result','token','index','force');    /**     * 架构函数     * 取得DB类的实例对象 字段检查     * @access public     * @param string $name 模型名称     * @param string $tablePrefix 表前缀     * @param mixed $connection 数据库连接信息     */    public function __construct($name='',$tablePrefix='',$connection='') {        // 模型初始化        $this->_initialize();        // 获取模型名称        if(!empty($name)) {            if(strpos($name,'.')) { // 支持 数据库名.模型名的 定义                list($this->dbName,$this->name) = explode('.',$name);            }else{                $this->name   =  $name;            }        }elseif(empty($this->name)){            $this->name =   $this->getModelName();        }        // 设置表前缀        if(is_null($tablePrefix)) {// 前缀为Null表示没有前缀            $this->tablePrefix = '';        }elseif('' != $tablePrefix) {            $this->tablePrefix = $tablePrefix;        }elseif(!isset($this->tablePrefix)){            $this->tablePrefix = C('DB_PREFIX');        }        // 数据库初始化操作        // 获取数据库操作对象        // 当前模型有独立的数据库连接信息        $this->db(0,empty($this->connection)?$connection:$this->connection,true);    }    /**     * 自动检测数据表信息     * @access protected     * @return void     */    protected function _checkTableInfo() {        // 如果不是Model类 自动记录数据表信息        // 只在第一次执行记录        if(empty($this->fields)) {            // 如果数据表字段没有定义则自动获取            if(C('DB_FIELDS_CACHE')) {                $db   =  $this->dbName?:C('DB_NAME');                $fields = F('_fields/'.strtolower($db.'.'.$this->tablePrefix.$this->name));                if($fields) {                    $this->fields   =   $fields;                    if(!empty($fields['_pk'])){                        $this->pk       =   $fields['_pk'];                    }                    return ;                }            }            // 每次都会读取数据表信息            $this->flush();        }    }    /**     * 获取字段信息并缓存     * @access public     * @return void     */    public function flush() {        // 缓存不存在则查询数据表信息        $this->db->setModel($this->name);        $fields =   $this->db->getFields($this->getTableName());        if(!$fields) { // 无法获取字段信息            return false;        }        $this->fields   =   array_keys($fields);        unset($this->fields['_pk']);        foreach ($fields as $key=>$val){            // 记录字段类型            $type[$key]     =   $val['type'];            if($val['primary']) {                  // 增加复合主键支持                if (isset($this->fields['_pk']) && $this->fields['_pk'] != null) {                    if (is_string($this->fields['_pk'])) {                        $this->pk   =   array($this->fields['_pk']);                        $this->fields['_pk']   =   $this->pk;                    }                    $this->pk[]   =   $key;                    $this->fields['_pk'][]   =   $key;                } else {                    $this->pk   =   $key;                    $this->fields['_pk']   =   $key;                }                if($val['autoinc']) $this->autoinc   =   true;            }        }        // 记录字段类型信息        $this->fields['_type'] =  $type;        // 2008-3-7 增加缓存开关控制        if(C('DB_FIELDS_CACHE')){            // 永久缓存数据表信息            $db   =  $this->dbName?:C('DB_NAME');            F('_fields/'.strtolower($db.'.'.$this->tablePrefix.$this->name),$this->fields);        }    }    /**     * 设置数据对象的值     * @access public     * @param string $name 名称     * @param mixed $value 值     * @return void     */    public function __set($name,$value) {        // 设置数据对象属性        $this->data[$name]  =   $value;    }    /**     * 获取数据对象的值     * @access public     * @param string $name 名称     * @return mixed     */    public function __get($name) {        return isset($this->data[$name])?$this->data[$name]:null;    }    /**     * 检测数据对象的值     * @access public     * @param string $name 名称     * @return boolean     */    public function __isset($name) {        return isset($this->data[$name]);    }    /**     * 销毁数据对象的值     * @access public     * @param string $name 名称     * @return void     */    public function __unset($name) {        unset($this->data[$name]);    }    /**     * 利用__call方法实现一些特殊的Model方法     * @access public     * @param string $method 方法名称     * @param array $args 调用参数     * @return mixed     */    public function __call($method,$args) {        if(in_array(strtolower($method),$this->methods,true)) {            // 连贯操作的实现            $this->options[strtolower($method)] =   $args[0];            return $this;        }elseif(in_array(strtolower($method),array('count','sum','min','max','avg'),true)){            // 统计查询的实现            $field =  isset($args[0])?$args[0]:'*';            return $this->getField(strtoupper($method).'('.$field.') AS tp_'.$method);        }elseif(strtolower(substr($method,0,5))=='getby') {            // 根据某个字段获取记录            $field   =   parse_name(substr($method,5));            $where[$field] =  $args[0];            return $this->where($where)->find();        }elseif(strtolower(substr($method,0,10))=='getfieldby') {            // 根据某个字段获取记录的某个值            $name   =   parse_name(substr($method,10));            $where[$name] =$args[0];            return $this->where($where)->getField($args[1]);        }elseif(isset($this->_scope[$method])){// 命名范围的单独调用支持            return $this->scope($method,$args[0]);        }else{            E(__CLASS__.':'.$method.L('_METHOD_NOT_EXIST_'));            return;        }    }    // 回调方法 初始化模型    protected function _initialize() {}    /**     * 对保存到数据库的数据进行处理     * @access protected     * @param mixed $data 要操作的数据     * @return boolean     */     protected function _facade($data) {        // 检查数据字段合法性        if(!empty($this->fields)) {            if(!empty($this->options['field'])) {                $fields =   $this->options['field'];                unset($this->options['field']);                if(is_string($fields)) {                    $fields =   explode(',',$fields);                }                }else{                $fields =   $this->fields;            }                    foreach ($data as $key=>$val){                if(!in_array($key,$fields,true)){                    if(!empty($this->options['strict'])){                        E(L('_DATA_TYPE_INVALID_').':['.$key.'=>'.$val.']');                    }                    unset($data[$key]);                }elseif(is_scalar($val)) {                    // 字段类型检查 和 强制转换                    $this->_parseType($data,$key);                }            }        }               // 安全过滤        if(!empty($this->options['filter'])) {            $data = array_map($this->options['filter'],$data);            unset($this->options['filter']);        }        $this->_before_write($data);        return $data;     }    // 写入数据前的回调方法 包括新增和更新    protected function _before_write(&$data) {}    /**     * 新增数据     * @access public     * @param mixed $data 数据     * @param array $options 表达式     * @param boolean $replace 是否replace     * @return mixed     */    public function add($data='',$options=array(),$replace=false) {        if(empty($data)) {            // 没有传递数据,获取当前数据对象的值            if(!empty($this->data)) {                $data           =   $this->data;                // 重置数据                $this->data     = array();            }else{                $this->error    = L('_DATA_TYPE_INVALID_');                return false;            }        }        // 数据处理        $data       =   $this->_facade($data);        // 分析表达式        $options    =   $this->_parseOptions($options);        if(false === $this->_before_insert($data,$options)) {            return false;        }        // 写入数据到数据库        $result = $this->db->insert($data,$options,$replace);        if(false !== $result && is_numeric($result)) {            $pk     =   $this->getPk();              // 增加复合主键支持            if (is_array($pk)) return $result;            $insertId   =   $this->getLastInsID();            if($insertId) {                // 自增主键返回插入ID                $data[$pk]  = $insertId;                if(false === $this->_after_insert($data,$options)) {                    return false;                }                return $insertId;            }            if(false === $this->_after_insert($data,$options)) {                return false;            }        }        return $result;    }    // 插入数据前的回调方法    protected function _before_insert(&$data,$options) {}    // 插入成功后的回调方法    protected function _after_insert($data,$options) {}    public function addAll($dataList,$options=array(),$replace=false){        if(empty($dataList)) {            $this->error = L('_DATA_TYPE_INVALID_');            return false;        }        // 数据处理        foreach ($dataList as $key=>$data){            $dataList[$key] = $this->_facade($data);        }        // 分析表达式        $options =  $this->_parseOptions($options);        // 写入数据到数据库        $result = $this->db->insertAll($dataList,$options,$replace);        if(false !== $result ) {            $insertId   =   $this->getLastInsID();            if($insertId) {                return $insertId;            }        }        return $result;    }    /**     * 通过Select方式添加记录     * @access public     * @param string $fields 要插入的数据表字段名     * @param string $table 要插入的数据表名     * @param array $options 表达式     * @return boolean     */    public function selectAdd($fields='',$table='',$options=array()) {        // 分析表达式        $options =  $this->_parseOptions($options);        // 写入数据到数据库        if(false === $result = $this->db->selectInsert($fields?:$options['field'],$table?:$this->getTableName(),$options)){            // 数据库插入操作失败            $this->error = L('_OPERATION_WRONG_');            return false;        }else {            // 插入成功            return $result;        }    }    /**     * 保存数据     * @access public     * @param mixed $data 数据     * @param array $options 表达式     * @return boolean     */    public function save($data='',$options=array()) {        if(empty($data)) {            // 没有传递数据,获取当前数据对象的值            if(!empty($this->data)) {                $data           =   $this->data;                // 重置数据                $this->data     =   array();            }else{                $this->error    =   L('_DATA_TYPE_INVALID_');                return false;            }        }        // 数据处理        $data       =   $this->_facade($data);        if(empty($data)){            // 没有数据则不执行            $this->error    =   L('_DATA_TYPE_INVALID_');            return false;        }        // 分析表达式        $options    =   $this->_parseOptions($options);        $pk         =   $this->getPk();        if(!isset($options['where']) ) {            // 如果存在主键数据 则自动作为更新条件            if (is_string($pk) && isset($data[$pk])) {                $where[$pk]     =   $data[$pk];                unset($data[$pk]);            } elseif (is_array($pk)) {                // 增加复合主键支持                foreach ($pk as $field) {                    if(isset($data[$field])) {                        $where[$field]      =   $data[$field];                    } else {                           // 如果缺少复合主键数据则不执行                        $this->error        =   L('_OPERATION_WRONG_');                        return false;                    }                    unset($data[$field]);                }            }            if(!isset($where)){                // 如果没有任何更新条件则不执行                $this->error        =   L('_OPERATION_WRONG_');                return false;            }else{                $options['where']   =   $where;            }        }        if(is_array($options['where']) && isset($options['where'][$pk])){            $pkValue    =   $options['where'][$pk];        }        if(false === $this->_before_update($data,$options)) {            return false;        }        $result     =   $this->db->update($data,$options);        if(false !== $result && is_numeric($result)) {            if(isset($pkValue)) $data[$pk]   =  $pkValue;            $this->_after_update($data,$options);        }        return $result;    }    // 更新数据前的回调方法    protected function _before_update(&$data,$options) {}    // 更新成功后的回调方法    protected function _after_update($data,$options) {}    /**     * 删除数据     * @access public     * @param mixed $options 表达式     * @return mixed     */    public function delete($options=array()) {        $pk   =  $this->getPk();        if(empty($options) && empty($this->options['where'])) {            // 如果删除条件为空 则删除当前数据对象所对应的记录            if(!empty($this->data) && isset($this->data[$pk]))                return $this->delete($this->data[$pk]);            else                return false;        }        if(is_numeric($options)  || is_string($options)) {            // 根据主键删除记录            if(strpos($options,',')) {                $where[$pk]     =  array('IN', $options);            }else{                $where[$pk]     =  $options;            }            $options            =  array();            $options['where']   =  $where;        }        // 根据复合主键删除记录        if (is_array($options) && (count($options) > 0) && is_array($pk)) {            $count = 0;            foreach (array_keys($options) as $key) {                if (is_int($key)) $count++;             }             if ($count == count($pk)) {                $i = 0;                foreach ($pk as $field) {                    $where[$field] = $options[$i];                    unset($options[$i++]);                }                $options['where']  =  $where;            } else {                return false;            }        }        // 分析表达式        $options =  $this->_parseOptions($options);        if(empty($options['where'])){            // 如果条件为空 不进行删除操作 除非设置 1=1            return false;        }                if(is_array($options['where']) && isset($options['where'][$pk])){            $pkValue            =  $options['where'][$pk];        }        if(false === $this->_before_delete($options)) {            return false;        }                $result  =    $this->db->delete($options);        if(false !== $result && is_numeric($result)) {            $data = array();            if(isset($pkValue)) $data[$pk]   =  $pkValue;            $this->_after_delete($data,$options);        }        // 返回删除记录个数        return $result;    }    // 删除数据前的回调方法    protected function _before_delete($options) {}        // 删除成功后的回调方法    protected function _after_delete($data,$options) {}    /**     * 查询数据集     * @access public     * @param array $options 表达式参数     * @return mixed     */    public function select($options=array()) {        $pk   =  $this->getPk();        if(is_string($options) || is_numeric($options)) {            // 根据主键查询            if(strpos($options,',')) {                $where[$pk]     =  array('IN',$options);            }else{                $where[$pk]     =  $options;            }            $options            =  array();            $options['where']   =  $where;        }elseif (is_array($options) && (count($options) > 0) && is_array($pk)) {            // 根据复合主键查询            $count = 0;            foreach (array_keys($options) as $key) {                if (is_int($key)) $count++;             }             if ($count == count($pk)) {                $i = 0;                foreach ($pk as $field) {                    $where[$field] = $options[$i];                    unset($options[$i++]);                }                $options['where']  =  $where;            } else {                return false;            }        } elseif(false === $options){ // 用于子查询 不查询只返回SQL        	$options['fetch_sql'] = true;        }        // 分析表达式        $options    =  $this->_parseOptions($options);        // 判断查询缓存        if(isset($options['cache'])){            $cache  =   $options['cache'];            $key    =   is_string($cache['key'])?$cache['key']:md5(serialize($options));            $data   =   S($key,'',$cache);            if(false !== $data){                return $data;            }        }                $resultSet  = $this->db->select($options);        if(false === $resultSet) {            return false;        }        if(!empty($resultSet)) { // 有查询结果            if(is_string($resultSet)){                return $resultSet;            }            $resultSet  =   array_map(array($this,'_read_data'),$resultSet);            $this->_after_select($resultSet,$options);            if(isset($options['index'])){ // 对数据集进行索引                $index  =   explode(',',$options['index']);                foreach ($resultSet as $result){                    $_key   =  $result[$index[0]];                    if(isset($index[1]) && isset($result[$index[1]])){                        $cols[$_key] =  $result[$index[1]];                    }else{                        $cols[$_key] =  $result;                    }                }                $resultSet  =   $cols;            }        }        if(isset($cache)){            S($key,$resultSet,$cache);        }        return $resultSet;    }    // 查询成功后的回调方法    protected function _after_select(&$resultSet,$options) {}    /**     * 生成查询SQL 可用于子查询     * @access public     * @return string     */    public function buildSql() {        return  '( '.$this->fetchSql(true)->select().' )';    }    /**     * 分析表达式     * @access protected     * @param array $options 表达式参数     * @return array     */    protected function _parseOptions($options=array()) {        if(is_array($options))            $options =  array_merge($this->options,$options);        if(!isset($options['table'])){            // 自动获取表名            $options['table']   =   $this->getTableName();            $fields             =   $this->fields;        }else{            // 指定数据表 则重新获取字段列表 但不支持类型检测            $fields             =   $this->getDbFields();        }        // 数据表别名        if(!empty($options['alias'])) {            $options['table']  .=   ' '.$options['alias'];        }        // 记录操作的模型名称        $options['model']       =   $this->name;        // 字段类型验证        if(isset($options['where']) && is_array($options['where']) && !empty($fields) && !isset($options['join'])) {            // 对数组查询条件进行字段类型检查            foreach ($options['where'] as $key=>$val){                $key            =   trim($key);                if(in_array($key,$fields,true)){                    if(is_scalar($val)) {                        $this->_parseType($options['where'],$key);                    }                }elseif(!is_numeric($key) && '_' != substr($key,0,1) && false === strpos($key,'.') && false === strpos($key,'(') && false === strpos($key,'|') && false === strpos($key,'&')){                    if(!empty($this->options['strict'])){                        E(L('_ERROR_QUERY_EXPRESS_').':['.$key.'=>'.$val.']');                    }                     unset($options['where'][$key]);                }            }        }        // 查询过后清空sql表达式组装 避免影响下次查询        $this->options  =   array();        // 表达式过滤        $this->_options_filter($options);        return $options;    }    // 表达式过滤回调方法    protected function _options_filter(&$options) {}    /**     * 数据类型检测     * @access protected     * @param mixed $data 数据     * @param string $key 字段名     * @return void     */    protected function _parseType(&$data,$key) {        if(!isset($this->options['bind'][':'.$key]) && isset($this->fields['_type'][$key])){            $fieldType = strtolower($this->fields['_type'][$key]);            if(false !== strpos($fieldType,'enum')){                // 支持ENUM类型优先检测            }elseif(false === strpos($fieldType,'bigint') && false !== strpos($fieldType,'int')) {                $data[$key]   =  intval($data[$key]);            }elseif(false !== strpos($fieldType,'float') || false !== strpos($fieldType,'double')){                $data[$key]   =  floatval($data[$key]);            }elseif(false !== strpos($fieldType,'bool')){                $data[$key]   =  (bool)$data[$key];            }        }    }    /**     * 数据读取后的处理     * @access protected     * @param array $data 当前数据     * @return array     */    protected function _read_data($data) {        // 检查字段映射        if(!empty($this->_map) && C('READ_DATA_MAP')) {            foreach ($this->_map as $key=>$val){                if(isset($data[$val])) {                    $data[$key] =   $data[$val];                    unset($data[$val]);                }            }        }        return $data;    }    /**     * 查询数据     * @access public     * @param mixed $options 表达式参数     * @return mixed     */    public function find($options=array()) {        if(is_numeric($options) || is_string($options)) {            $where[$this->getPk()]  =   $options;            $options                =   array();            $options['where']       =   $where;        }        // 根据复合主键查找记录        $pk  =  $this->getPk();        if (is_array($options) && (count($options) > 0) && is_array($pk)) {            // 根据复合主键查询            $count = 0;            foreach (array_keys($options) as $key) {                if (is_int($key)) $count++;             }             if ($count == count($pk)) {                $i = 0;                foreach ($pk as $field) {                    $where[$field] = $options[$i];                    unset($options[$i++]);                }                $options['where']  =  $where;            } else {                return false;            }        }        // 总是查找一条记录        $options['limit']   =   1;        // 分析表达式        $options            =   $this->_parseOptions($options);        // 判断查询缓存        if(isset($options['cache'])){            $cache  =   $options['cache'];            $key    =   is_string($cache['key'])?$cache['key']:md5(serialize($options));            $data   =   S($key,'',$cache);            if(false !== $data){                $this->data     =   $data;                return $data;            }        }        $resultSet          =   $this->db->select($options);        if(false === $resultSet) {            return false;        }        if(empty($resultSet)) {// 查询结果为空            return null;        }        if(is_string($resultSet)){            return $resultSet;        }        // 读取数据后的处理        $data   =   $this->_read_data($resultSet[0]);        $this->_after_find($data,$options);        if(!empty($this->options['result'])) {            return $this->returnResult($data,$this->options['result']);        }        $this->data     =   $data;        if(isset($cache)){            S($key,$data,$cache);        }        return $this->data;    }    // 查询成功的回调方法    protected function _after_find(&$result,$options) {}    protected function returnResult($data,$type=''){        if ($type){            if(is_callable($type)){                return call_user_func($type,$data);            }            switch (strtolower($type)){                case 'json':                    return json_encode($data);                case 'xml':                    return xml_encode($data);            }        }        return $data;    }    /**     * 处理字段映射     * @access public     * @param array $data 当前数据     * @param integer $type 类型 0 写入 1 读取     * @return array     */    public function parseFieldsMap($data,$type=1) {        // 检查字段映射        if(!empty($this->_map)) {            foreach ($this->_map as $key=>$val){                if($type==1) { // 读取                    if(isset($data[$val])) {                        $data[$key] =   $data[$val];                        unset($data[$val]);                    }                }else{                    if(isset($data[$key])) {                        $data[$val] =   $data[$key];                        unset($data[$key]);                    }                }            }        }        return $data;    }    /**     * 设置记录的某个字段值     * 支持使用数据库字段和方法     * @access public     * @param string|array $field  字段名     * @param string $value  字段值     * @return boolean     */    public function setField($field,$value='') {        if(is_array($field)) {            $data           =   $field;        }else{            $data[$field]   =   $value;        }        return $this->save($data);    }    /**     * 字段值增长     * @access public     * @param string $field  字段名     * @param integer $step  增长值     * @param integer $lazyTime  延时时间(s)     * @return boolean     */    public function setInc($field,$step=1,$lazyTime=0) {        if($lazyTime>0) {// 延迟写入            $condition 	=  	$this->options['where'];            $guid 		=  	md5($this->name.'_'.$field.'_'.serialize($condition));            $step 		= 	$this->lazyWrite($guid,$step,$lazyTime);            if(empty($step)) {            	return true; // 等待下次写入            }elseif($step < 0) {            	$step 	=	'-'.$step;            }        }        return $this->setField($field,array('exp',$field.'+'.$step));    }    /**     * 字段值减少     * @access public     * @param string $field  字段名     * @param integer $step  减少值     * @param integer $lazyTime  延时时间(s)     * @return boolean     */    public function setDec($field,$step=1,$lazyTime=0) {        if($lazyTime>0) {// 延迟写入            $condition  =  	$this->options['where'];            $guid 		=  	md5($this->name.'_'.$field.'_'.serialize($condition));            $step 		= 	$this->lazyWrite($guid,-$step,$lazyTime);            if(empty($step)) {            	return true; // 等待下次写入            }elseif($step > 0) {            	$step 	=	'-'.$step;            }        }        return $this->setField($field,array('exp',$field.'-'.$step));    }    /**     * 延时更新检查 返回false表示需要延时     * 否则返回实际写入的数值     * @access public     * @param string $guid  写入标识     * @param integer $step  写入步进值     * @param integer $lazyTime  延时时间(s)     * @return false|integer     */    protected function lazyWrite($guid,$step,$lazyTime) {        if(false !== ($value = S($guid))) { // 存在缓存写入数据            if(NOW_TIME > S($guid.'_time')+$lazyTime) {                // 延时更新时间到了,删除缓存数据 并实际写入数据库                S($guid,NULL);                S($guid.'_time',NULL);                return $value+$step;            }else{                // 追加数据到缓存                S($guid,$value+$step);                return false;            }        }else{ // 没有缓存数据            S($guid,$step);            // 计时开始            S($guid.'_time',NOW_TIME);            return false;        }    }    /**     * 获取一条记录的某个字段值     * @access public     * @param string $field  字段名     * @param string $spea  字段数据间隔符号 NULL返回数组     * @return mixed     */    public function getField($field,$sepa=null) {        $options['field']       =   $field;        $options                =   $this->_parseOptions($options);        // 判断查询缓存        if(isset($options['cache'])){            $cache  =   $options['cache'];            $key    =   is_string($cache['key'])?$cache['key']:md5($sepa.serialize($options));            $data   =   S($key,'',$cache);            if(false !== $data){                return $data;            }        }                $field                  =   trim($field);        if(strpos($field,',') && false !== $sepa) { // 多字段            if(!isset($options['limit'])){                $options['limit']   =   is_numeric($sepa)?$sepa:'';            }            $resultSet          =   $this->db->select($options);            if(!empty($resultSet)) {		        if(is_string($resultSet)){		            return $resultSet;		        }            	                $_field         =   explode(',', $field);                $field          =   array_keys($resultSet[0]);                $key1           =   array_shift($field);                $key2           =   array_shift($field);                $cols           =   array();                $count          =   count($_field);                foreach ($resultSet as $result){                    $name   =  $result[$key1];                    if(2==$count) {                        $cols[$name]   =  $result[$key2];                    }else{                        $cols[$name]   =  is_string($sepa)?implode($sepa,array_slice($result,1)):$result;                    }                }                if(isset($cache)){                    S($key,$cols,$cache);                }                return $cols;            }        }else{   // 查找一条记录            // 返回数据个数            if(true !== $sepa) {// 当sepa指定为true的时候 返回所有数据                $options['limit']   =   is_numeric($sepa)?$sepa:1;            }            $result = $this->db->select($options);            if(!empty($result)) {		        if(is_string($result)){		            return $result;		        }            	                if(true !== $sepa && 1==$options['limit']) {                    $data   =   reset($result[0]);                    if(isset($cache)){                        S($key,$data,$cache);                    }                                return $data;                }                foreach ($result as $val){                    $array[]    =   $val[$field];                }                if(isset($cache)){                    S($key,$array,$cache);                }                                return $array;            }        }        return null;    }    /**     * 创建数据对象 但不保存到数据库     * @access public     * @param mixed $data 创建数据     * @param string $type 状态     * @return mixed     */     public function create($data='',$type='') {        // 如果没有传值默认取POST数据        if(empty($data)) {            $data   =   I('post.');        }elseif(is_object($data)){            $data   =   get_object_vars($data);        }        // 验证数据        if(empty($data) || !is_array($data)) {            $this->error = L('_DATA_TYPE_INVALID_');            return false;        }        // 状态        $type = $type?:(!empty($data[$this->getPk()])?self::MODEL_UPDATE:self::MODEL_INSERT);        // 检查字段映射		$data =	$this->parseFieldsMap($data,0);        // 检测提交字段的合法性        if(isset($this->options['field'])) { // $this->field('field1,field2...')->create()            $fields =   $this->options['field'];            unset($this->options['field']);        }elseif($type == self::MODEL_INSERT && isset($this->insertFields)) {            $fields =   $this->insertFields;        }elseif($type == self::MODEL_UPDATE && isset($this->updateFields)) {            $fields =   $this->updateFields;        }        if(isset($fields)) {            if(is_string($fields)) {                $fields =   explode(',',$fields);            }            // 判断令牌验证字段            if(C('TOKEN_ON'))   $fields[] = C('TOKEN_NAME', null, '__hash__');            foreach ($data as $key=>$val){                if(!in_array($key,$fields)) {                    unset($data[$key]);                }            }        }        // 数据自动验证        if(!$this->autoValidation($data,$type)) return false;        // 表单令牌验证        if(!$this->autoCheckToken($data)) {            $this->error = L('_TOKEN_ERROR_');            return false;        }        // 验证完成生成数据对象        if($this->autoCheckFields) { // 开启字段检测 则过滤非法字段数据            $fields =   $this->getDbFields();            foreach ($data as $key=>$val){                if(!in_array($key,$fields)) {                    unset($data[$key]);                }elseif(MAGIC_QUOTES_GPC && is_string($val)){                    $data[$key] =   stripslashes($val);                }            }        }        // 创建完成对数据进行自动处理        $this->autoOperation($data,$type);        // 赋值当前数据对象        $this->data =   $data;        // 返回创建的数据以供其他调用        return $data;     }    // 自动表单令牌验证    // TODO  ajax无刷新多次提交暂不能满足    public function autoCheckToken($data) {        // 支持使用token(false) 关闭令牌验证        if(isset($this->options['token']) && !$this->options['token']) return true;        if(C('TOKEN_ON')){            $name   = C('TOKEN_NAME', null, '__hash__');            if(!isset($data[$name]) || !isset($_SESSION[$name])) { // 令牌数据无效                return false;            }            // 令牌验证            list($key,$value)  =  explode('_',$data[$name]);            if(isset($_SESSION[$name][$key]) && $value && $_SESSION[$name][$key] === $value) { // 防止重复提交                unset($_SESSION[$name][$key]); // 验证完成销毁session                return true;            }            // 开启TOKEN重置            if(C('TOKEN_RESET')) unset($_SESSION[$name][$key]);            return false;        }        return true;    }    /**     * 使用正则验证数据     * @access public     * @param string $value  要验证的数据     * @param string $rule 验证规则     * @return boolean     */    public function regex($value,$rule) {        $validate = array(            'require'   =>  '/\S+/',            'email'     =>  '/^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/',            'url'       =>  '/^http(s?):\/\/(?:[A-za-z0-9-]+\.)+[A-za-z]{2,4}(:\d+)?(?:[\/\?#][\/=\?%\-&~`@[\]\':+!\.#\w]*)?$/',            'currency'  =>  '/^\d+(\.\d+)?$/',            'number'    =>  '/^\d+$/',            'zip'       =>  '/^\d{6}$/',            'integer'   =>  '/^[-\+]?\d+$/',            'double'    =>  '/^[-\+]?\d+(\.\d+)?$/',            'english'   =>  '/^[A-Za-z]+$/',        );        // 检查是否有内置的正则表达式        if(isset($validate[strtolower($rule)]))            $rule       =   $validate[strtolower($rule)];        return preg_match($rule,$value)===1;    }    /**     * 自动表单处理     * @access public     * @param array $data 创建数据     * @param string $type 创建类型     * @return mixed     */    private function autoOperation(&$data,$type) {    	if(false === $this->options['auto']){    		// 关闭自动完成    		return $data;    	}        if(!empty($this->options['auto'])) {            $_auto   =   $this->options['auto'];            unset($this->options['auto']);        }elseif(!empty($this->_auto)){            $_auto   =   $this->_auto;        }        // 自动填充        if(isset($_auto)) {            foreach ($_auto as $auto){                // 填充因子定义格式                // array('field','填充内容','填充条件','附加规则',[额外参数])                if(empty($auto[2])) $auto[2] =  self::MODEL_INSERT; // 默认为新增的时候自动填充                if( $type == $auto[2] || $auto[2] == self::MODEL_BOTH) {                    if(empty($auto[3])) $auto[3] =  'string';                    switch(trim($auto[3])) {                        case 'function':    //  使用函数进行填充 字段的值作为参数                        case 'callback': // 使用回调方法                            $args = isset($auto[4])?(array)$auto[4]:array();                            if(isset($data[$auto[0]])) {                                array_unshift($args,$data[$auto[0]]);                            }                            if('function'==$auto[3]) {                                $data[$auto[0]]  = call_user_func_array($auto[1], $args);                            }else{                                $data[$auto[0]]  =  call_user_func_array(array(&$this,$auto[1]), $args);                            }                            break;                        case 'field':    // 用其它字段的值进行填充                            $data[$auto[0]] = $data[$auto[1]];                            break;                        case 'ignore': // 为空忽略                            if($auto[1]===$data[$auto[0]])                                unset($data[$auto[0]]);                            break;                        case 'string':                        default: // 默认作为字符串填充                            $data[$auto[0]] = $auto[1];                    }                    if(isset($data[$auto[0]]) && false === $data[$auto[0]] )   unset($data[$auto[0]]);                }            }        }        return $data;    }    /**     * 自动表单验证     * @access protected     * @param array $data 创建数据     * @param string $type 创建类型     * @return boolean     */    protected function autoValidation($data,$type) {    	if(false === $this->options['validate'] ){    		// 关闭自动验证    		return true;    	}        if(!empty($this->options['validate'])) {            $_validate   =   $this->options['validate'];            unset($this->options['validate']);        }elseif(!empty($this->_validate)){            $_validate   =   $this->_validate;        }        // 属性验证        if(isset($_validate)) { // 如果设置了数据自动验证则进行数据验证            if($this->patchValidate) { // 重置验证错误信息                $this->error = array();            }            foreach($_validate as $key=>$val) {                // 验证因子定义格式                // array(field,rule,message,condition,type,when,params)                // 判断是否需要执行验证                if(empty($val[5]) || ( $val[5]== self::MODEL_BOTH && $type < 3 ) || $val[5]== $type ) {                    if(0==strpos($val[2],'{%') && strpos($val[2],'}'))                        // 支持提示信息的多语言 使用 {%语言定义} 方式                        $val[2]  =  L(substr($val[2],2,-1));                    $val[3]  =  isset($val[3])?$val[3]:self::EXISTS_VALIDATE;                    $val[4]  =  isset($val[4])?$val[4]:'regex';                    // 判断验证条件                    switch($val[3]) {                        case self::MUST_VALIDATE:   // 必须验证 不管表单是否有设置该字段                            if(false === $this->_validationField($data,$val))                                 return false;                            break;                        case self::VALUE_VALIDATE:    // 值不为空的时候才验证                            if('' != trim($data[$val[0]]))                                if(false === $this->_validationField($data,$val))                                     return false;                            break;                        default:    // 默认表单存在该字段就验证                            if(isset($data[$val[0]]))                                if(false === $this->_validationField($data,$val))                                     return false;                    }                }            }            // 批量验证的时候最后返回错误            if(!empty($this->error)) return false;        }        return true;    }    /**     * 验证表单字段 支持批量验证     * 如果批量验证返回错误的数组信息     * @access protected     * @param array $data 创建数据     * @param array $val 验证因子     * @return boolean     */    protected function _validationField($data,$val) {        if($this->patchValidate && isset($this->error[$val[0]]))            return ; //当前字段已经有规则验证没有通过        if(false === $this->_validationFieldItem($data,$val)){            if($this->patchValidate) {                $this->error[$val[0]]   =   $val[2];            }else{                $this->error            =   $val[2];                return false;            }        }        return ;    }    /**     * 根据验证因子验证字段     * @access protected     * @param array $data 创建数据     * @param array $val 验证因子     * @return boolean     */    protected function _validationFieldItem($data,$val) {        switch(strtolower(trim($val[4]))) {            case 'function':// 使用函数进行验证            case 'callback':// 调用方法进行验证                $args = isset($val[6])?(array)$val[6]:array();                if(is_string($val[0]) && strpos($val[0], ','))                    $val[0] = explode(',', $val[0]);                if(is_array($val[0])){                    // 支持多个字段验证                    foreach($val[0] as $field)                        $_data[$field] = $data[$field];                    array_unshift($args, $_data);                }else{                    array_unshift($args, $data[$val[0]]);                }                if('function'==$val[4]) {                    return call_user_func_array($val[1], $args);                }else{                    return call_user_func_array(array(&$this, $val[1]), $args);                }            case 'confirm': // 验证两个字段是否相同                return $data[$val[0]] == $data[$val[1]];            case 'unique': // 验证某个值是否唯一                if(is_string($val[0]) && strpos($val[0],','))                    $val[0]  =  explode(',',$val[0]);                $map = array();                if(is_array($val[0])) {                    // 支持多个字段验证                    foreach ($val[0] as $field)                        $map[$field]   =  $data[$field];                }else{                    $map[$val[0]] = $data[$val[0]];                }                $pk =   $this->getPk();                if(!empty($data[$pk]) && is_string($pk)) { // 完善编辑的时候验证唯一                    $map[$pk] = array('neq',$data[$pk]);                }                if($this->where($map)->find())   return false;                return true;            default:  // 检查附加规则                return $this->check($data[$val[0]],$val[1],$val[4]);        }    }    /**     * 验证数据 支持 in between equal length regex expire ip_allow ip_deny     * @access public     * @param string $value 验证数据     * @param mixed $rule 验证表达式     * @param string $type 验证方式 默认为正则验证     * @return boolean     */    public function check($value,$rule,$type='regex'){        $type   =   strtolower(trim($type));        switch($type) {            case 'in': // 验证是否在某个指定范围之内 逗号分隔字符串或者数组            case 'notin':                $range   = is_array($rule)? $rule : explode(',',$rule);                return $type == 'in' ? in_array($value ,$range) : !in_array($value ,$range);            case 'between': // 验证是否在某个范围            case 'notbetween': // 验证是否不在某个范围                            if (is_array($rule)){                    $min    =    $rule[0];                    $max    =    $rule[1];                }else{                    list($min,$max)   =  explode(',',$rule);                }                return $type == 'between' ? $value>=$min && $value<=$max : $value<$min || $value>$max;            case 'equal': // 验证是否等于某个值            case 'notequal': // 验证是否等于某个值                            return $type == 'equal' ? $value == $rule : $value != $rule;            case 'length': // 验证长度                $length  =  mb_strlen($value,'utf-8'); // 当前数据长度                if(strpos($rule,',')) { // 长度区间                    list($min,$max)   =  explode(',',$rule);                    return $length >= $min && $length <= $max;                }else{// 指定长度                    return $length == $rule;                }            case 'expire':                list($start,$end)   =  explode(',',$rule);                if(!is_numeric($start)) $start   =  strtotime($start);                if(!is_numeric($end)) $end   =  strtotime($end);                return NOW_TIME >= $start && NOW_TIME <= $end;            case 'ip_allow': // IP 操作许可验证                return in_array(get_client_ip(),explode(',',$rule));            case 'ip_deny': // IP 操作禁止验证                return !in_array(get_client_ip(),explode(',',$rule));            case 'regex':            default:    // 默认使用正则验证 可以使用验证类中定义的验证名称                // 检查附加规则                return $this->regex($value,$rule);        }    }    /**     * 存储过程返回多数据集     * @access public     * @param string $sql  SQL指令     * @param mixed $parse  是否需要解析SQL     * @return array     */    public function procedure($sql, $parse = false) {        return $this->db->procedure($sql, $parse);    }    /**     * SQL查询     * @access public     * @param string $sql  SQL指令     * @param mixed $parse  是否需要解析SQL     * @return mixed     */    public function query($sql,$parse=false) {        if(!is_bool($parse) && !is_array($parse)) {            $parse = func_get_args();            array_shift($parse);        }        $sql  =   $this->parseSql($sql,$parse);        return $this->db->query($sql);    }    /**     * 执行SQL语句     * @access public     * @param string $sql  SQL指令     * @param mixed $parse  是否需要解析SQL     * @return false | integer     */    public function execute($sql,$parse=false) {        if(!is_bool($parse) && !is_array($parse)) {            $parse = func_get_args();            array_shift($parse);        }        $sql  =   $this->parseSql($sql,$parse);        return $this->db->execute($sql);    }    /**     * 解析SQL语句     * @access public     * @param string $sql  SQL指令     * @param boolean $parse  是否需要解析SQL     * @return string     */    protected function parseSql($sql,$parse) {        // 分析表达式        if(true === $parse) {            $options =  $this->_parseOptions();            $sql    =   $this->db->parseSql($sql,$options);        }elseif(is_array($parse)){ // SQL预处理            $parse  =   array_map(array($this->db,'escapeString'),$parse);            $sql    =   vsprintf($sql,$parse);        }else{            $sql    =   strtr($sql,array('__TABLE__'=>$this->getTableName(),'__PREFIX__'=>$this->tablePrefix));            $prefix =   $this->tablePrefix;            $sql    =   preg_replace_callback("/__([A-Z0-9_-]+)__/sU", function($match) use($prefix){ return $prefix.strtolower($match[1]);}, $sql);        }        $this->db->setModel($this->name);        return $sql;    }    /**     * 切换当前的数据库连接     * @access public     * @param integer $linkNum  连接序号     * @param mixed $config  数据库连接信息     * @param boolean $force 强制重新连接     * @return Model     */    public function db($linkNum='',$config='',$force=false) {        if('' === $linkNum && $this->db) {            return $this->db;        }        if(!isset($this->_db[$linkNum]) || $force ) {            // 创建一个新的实例            if(!empty($config) && is_string($config) && false === strpos($config,'/')) { // 支持读取配置参数                $config  =  C($config);            }            $this->_db[$linkNum]            =    Db::getInstance($config);        }elseif(NULL === $config){            $this->_db[$linkNum]->close(); // 关闭数据库连接            unset($this->_db[$linkNum]);            return ;        }        // 切换数据库连接        $this->db   =    $this->_db[$linkNum];        $this->_after_db();        // 字段检测        if(!empty($this->name) && $this->autoCheckFields)    $this->_checkTableInfo();        return $this;    }    // 数据库切换后回调方法    protected function _after_db() {}    /**     * 得到当前的数据对象名称     * @access public     * @return string     */    public function getModelName() {        if(empty($this->name)){            $name = substr(get_class($this),0,-strlen(C('DEFAULT_M_LAYER')));            if ( $pos = strrpos($name,'\\') ) {//有命名空间                $this->name = substr($name,$pos+1);            }else{                $this->name = $name;            }        }        return $this->name;    }    /**     * 得到完整的数据表名     * @access public     * @return string     */    public function getTableName() {        if(empty($this->trueTableName)) {            $tableName  = !empty($this->tablePrefix) ? $this->tablePrefix : '';            if(!empty($this->tableName)) {                $tableName .= $this->tableName;            }else{                $tableName .= parse_name($this->name);            }            $this->trueTableName    =   strtolower($tableName);        }        return (!empty($this->dbName)?$this->dbName.'.':'').$this->trueTableName;    }    /**     * 启动事务     * @access public     * @return void     */    public function startTrans() {        $this->commit();        $this->db->startTrans();        return ;    }    /**     * 提交事务     * @access public     * @return boolean     */    public function commit() {        return $this->db->commit();    }    /**     * 事务回滚     * @access public     * @return boolean     */    public function rollback() {        return $this->db->rollback();    }    /**     * 返回模型的错误信息     * @access public     * @return string     */    public function getError(){        return $this->error;    }    /**     * 返回数据库的错误信息     * @access public     * @return string     */    public function getDbError() {        return $this->db->getError();    }    /**     * 返回最后插入的ID     * @access public     * @return string     */    public function getLastInsID() {        return $this->db->getLastInsID();    }    /**     * 返回最后执行的sql语句     * @access public     * @return string     */    public function getLastSql() {        return $this->db->getLastSql($this->name);    }    // 鉴于getLastSql比较常用 增加_sql 别名    public function _sql(){        return $this->getLastSql();    }    /**     * 获取主键名称     * @access public     * @return string     */    public function getPk() {        return $this->pk;    }    /**     * 获取数据表字段信息     * @access public     * @return array     */    public function getDbFields(){        if(isset($this->options['table'])) {// 动态指定表名            if(is_array($this->options['table'])){                $table  =   key($this->options['table']);            }else{                $table  =   $this->options['table'];                if(strpos($table,')')){                    // 子查询                    return false;                }            }            $fields     =   $this->db->getFields($table);            return  $fields ? array_keys($fields) : false;        }        if($this->fields) {            $fields     =  $this->fields;            unset($fields['_type'],$fields['_pk']);            return $fields;        }        return false;    }    /**     * 设置数据对象值     * @access public     * @param mixed $data 数据     * @return Model     */    public function data($data=''){        if('' === $data && !empty($this->data)) {            return $this->data;        }        if(is_object($data)){            $data   =   get_object_vars($data);        }elseif(is_string($data)){            parse_str($data,$data);        }elseif(!is_array($data)){            E(L('_DATA_TYPE_INVALID_'));        }        $this->data = $data;        return $this;    }    /**     * 指定当前的数据表     * @access public     * @param mixed $table     * @return Model     */    public function table($table) {        $prefix =   $this->tablePrefix;        if(is_array($table)) {            $this->options['table'] =   $table;        }elseif(!empty($table)) {            //将__TABLE_NAME__替换成带前缀的表名            $table  = preg_replace_callback("/__([A-Z0-9_-]+)__/sU", function($match) use($prefix){ return $prefix.strtolower($match[1]);}, $table);            $this->options['table'] =   $table;        }        return $this;    }    /**     * USING支持 用于多表删除     * @access public     * @param mixed $using     * @return Model     */    public function using($using){        $prefix =   $this->tablePrefix;        if(is_array($using)) {            $this->options['using'] =   $using;        }elseif(!empty($using)) {            //将__TABLE_NAME__替换成带前缀的表名            $using  = preg_replace_callback("/__([A-Z0-9_-]+)__/sU", function($match) use($prefix){ return $prefix.strtolower($match[1]);}, $using);            $this->options['using'] =   $using;        }        return $this;    }    /**     * 查询SQL组装 join     * @access public     * @param mixed $join     * @param string $type JOIN类型     * @return Model     */    public function join($join,$type='INNER') {        $prefix =   $this->tablePrefix;        if(is_array($join)) {            foreach ($join as $key=>&$_join){                $_join  =   preg_replace_callback("/__([A-Z0-9_-]+)__/sU", function($match) use($prefix){ return $prefix.strtolower($match[1]);}, $_join);                $_join  =   false !== stripos($_join,'JOIN')? $_join : $type.' JOIN ' .$_join;            }            $this->options['join']      =   $join;        }elseif(!empty($join)) {            //将__TABLE_NAME__字符串替换成带前缀的表名            $join  = preg_replace_callback("/__([A-Z0-9_-]+)__/sU", function($match) use($prefix){ return $prefix.strtolower($match[1]);}, $join);            $this->options['join'][]    =   false !== stripos($join,'JOIN')? $join : $type.' JOIN '.$join;        }        return $this;    }    /**     * 查询SQL组装 union     * @access public     * @param mixed $union     * @param boolean $all     * @return Model     */    public function union($union,$all=false) {        if(empty($union)) return $this;        if($all) {            $this->options['union']['_all']  =   true;        }        if(is_object($union)) {            $union   =  get_object_vars($union);        }        // 转换union表达式        if(is_string($union) ) {            $prefix =   $this->tablePrefix;            //将__TABLE_NAME__字符串替换成带前缀的表名            $options  = preg_replace_callback("/__([A-Z0-9_-]+)__/sU", function($match) use($prefix){ return $prefix.strtolower($match[1]);}, $union);        }elseif(is_array($union)){            if(isset($union[0])) {                $this->options['union']  =  array_merge($this->options['union'],$union);                return $this;            }else{                $options =  $union;            }        }else{            E(L('_DATA_TYPE_INVALID_'));        }        $this->options['union'][]  =   $options;        return $this;    }    /**     * 查询缓存     * @access public     * @param mixed $key     * @param integer $expire     * @param string $type     * @return Model     */    public function cache($key=true,$expire=null,$type=''){        // 增加快捷调用方式 cache(10) 等同于 cache(true, 10)        if(is_numeric($key) && is_null($expire)){            $expire = $key;            $key    = true;        }        if(false !== $key)            $this->options['cache']  =  array('key'=>$key,'expire'=>$expire,'type'=>$type);        return $this;    }    /**     * 指定查询字段 支持字段排除     * @access public     * @param mixed $field     * @param boolean $except 是否排除     * @return Model     */    public function field($field,$except=false){        if(true === $field) {// 获取全部字段            $fields     =  $this->getDbFields();            $field      =  $fields?:'*';        }elseif($except) {// 字段排除            if(is_string($field)) {                $field  =  explode(',',$field);            }            $fields     =  $this->getDbFields();            $field      =  $fields?array_diff($fields,$field):$field;        }        $this->options['field']   =   $field;        return $this;    }    /**     * 调用命名范围     * @access public     * @param mixed $scope 命名范围名称 支持多个 和直接定义     * @param array $args 参数     * @return Model     */    public function scope($scope='',$args=NULL){        if('' === $scope) {            if(isset($this->_scope['default'])) {                // 默认的命名范围                $options    =   $this->_scope['default'];            }else{                return $this;            }        }elseif(is_string($scope)){ // 支持多个命名范围调用 用逗号分割            $scopes         =   explode(',',$scope);            $options        =   array();            foreach ($scopes as $name){                if(!isset($this->_scope[$name])) continue;                $options    =   array_merge($options,$this->_scope[$name]);            }            if(!empty($args) && is_array($args)) {                $options    =   array_merge($options,$args);            }        }elseif(is_array($scope)){ // 直接传入命名范围定义            $options        =   $scope;        }                if(is_array($options) && !empty($options)){            $this->options  =   array_merge($this->options,array_change_key_case($options));        }        return $this;    }    /**     * 指定查询条件 支持安全过滤     * @access public     * @param mixed $where 条件表达式     * @param mixed $parse 预处理参数     * @return Model     */    public function where($where,$parse=null){        if(!is_null($parse) && is_string($where)) {            if(!is_array($parse)) {                $parse = func_get_args();                array_shift($parse);            }            $parse = array_map(array($this->db,'escapeString'),$parse);            $where =   vsprintf($where,$parse);        }elseif(is_object($where)){            $where  =   get_object_vars($where);        }        if(is_string($where) && '' != $where){            $map    =   array();            $map['_string']   =   $where;            $where  =   $map;        }                if(isset($this->options['where'])){            $this->options['where'] =   array_merge($this->options['where'],$where);        }else{            $this->options['where'] =   $where;        }                return $this;    }    /**     * 指定查询数量     * @access public     * @param mixed $offset 起始位置     * @param mixed $length 查询数量     * @return Model     */    public function limit($offset,$length=null){        if(is_null($length) && strpos($offset,',')){            list($offset,$length)   =   explode(',',$offset);        }        $this->options['limit']     =   intval($offset).( $length? ','.intval($length) : '' );        return $this;    }    /**     * 指定分页     * @access public     * @param mixed $page 页数     * @param mixed $listRows 每页数量     * @return Model     */    public function page($page,$listRows=null){        if(is_null($listRows) && strpos($page,',')){            list($page,$listRows)   =   explode(',',$page);        }        $this->options['page']      =   array(intval($page),intval($listRows));        return $this;    }    /**     * 查询注释     * @access public     * @param string $comment 注释     * @return Model     */    public function comment($comment){        $this->options['comment'] =   $comment;        return $this;    }    /**     * 获取执行的SQL语句     * @access public     * @param boolean $fetch 是否返回sql     * @return Model     */    public function fetchSql($fetch=true){        $this->options['fetch_sql'] =   $fetch;        return $this;    }    /**     * 参数绑定     * @access public     * @param string $key  参数名     * @param mixed $value  绑定的变量及绑定参数     * @return Model     */    public function bind($key,$value=false) {        if(is_array($key)){            $this->options['bind'] =    $key;        }else{            $num =  func_num_args();            if($num>2){                $params =   func_get_args();                array_shift($params);                $this->options['bind'][$key] =  $params;            }else{                $this->options['bind'][$key] =  $value;            }                }        return $this;    }    /**     * 设置模型的属性值     * @access public     * @param string $name 名称     * @param mixed $value 值     * @return Model     */    public function setProperty($name,$value) {        if(property_exists($this,$name))            $this->$name = $value;        return $this;    }}
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