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- <?php
- /**
- * model.class.php 数据模型基类
- *
- * @copyright (C) 2005-2010 PHPCMS
- * @license http://www.phpcms.cn/license/
- * @lastmodify 2010-6-7
- */
- defined('IN_PHPCMS') or exit('Access Denied');
- pc_base::load_sys_class('db_factory', '', 0);
- class model {
-
- //数据库配置
- protected $db_config = '';
- //数据库连接
- protected $db = '';
- //调用数据库的配置项
- protected $db_setting = 'default';
- //数据表名
- protected $table_name = '';
- //表前缀
- public $db_tablepre = '';
-
- public function __construct() {
- if (!isset($this->db_config[$this->db_setting])) {
- $this->db_setting = 'default';
- }
- $this->table_name = $this->db_config[$this->db_setting]['tablepre'].$this->table_name;
- $this->db_tablepre = $this->db_config[$this->db_setting]['tablepre'];
- $this->db = db_factory::get_instance($this->db_config)->get_database($this->db_setting);
- }
-
- /**
- * 执行sql查询
- * @param $where 查询条件[例`name`='$name']
- * @param $data 需要查询的字段值[例`name`,`gender`,`birthday`]
- * @param $limit 返回结果范围[例:10或10,10 默认为空]
- * @param $order 排序方式 [默认按数据库默认方式排序]
- * @param $group 分组方式 [默认为空]
- * @param $key 返回数组按键名排序
- * @return array 查询结果集数组
- */
- final public function select($where = '', $data = '*', $limit = '', $order = '', $group = '', $key='') {
- if (is_array($where)) $where = $this->sqls($where);
- return $this->db->select($data, $this->table_name, $where, $limit, $order, $group, $key);
- }
- /**
- * 查询多条数据并分页
- * @param $where
- * @param $order
- * @param $page
- * @param $pagesize
- * @return unknown_type
- */
- final public function listinfo($where = '', $order = '', $page = 1, $pagesize = 20, $key='', $setpages = 10,$urlrule = '',$array = array(), $data = '*') {
- $where = to_sqls($where);
- $this->number = $this->count($where);
- $page = max(intval($page), 1);
- $offset = $pagesize*($page-1);
- $this->pages = pages($this->number, $page, $pagesize, $urlrule, $array, $setpages);
- $array = array();
- if ($this->number > 0) {
- return $this->select($where, $data, "$offset, $pagesize", $order, '', $key);
- } else {
- return array();
- }
- }
- /**
- * 获取单条记录查询
- * @param $where 查询条件
- * @param $data 需要查询的字段值[例`name`,`gender`,`birthday`]
- * @param $order 排序方式 [默认按数据库默认方式排序]
- * @param $group 分组方式 [默认为空]
- * @return array/null 数据查询结果集,如果不存在,则返回空
- */
- final public function get_one($where = '', $data = '*', $order = '', $group = '') {
- if (is_array($where)) $where = $this->sqls($where);
- return $this->db->get_one($data, $this->table_name, $where, $order, $group);
- }
-
- /**
- * 直接执行sql查询
- * @param $sql 查询sql语句
- * @return boolean/query resource 如果为查询语句,返回资源句柄,否则返回true/false
- */
- final public function query($sql) {
- $sql = str_replace('phpcms_', $this->db_tablepre, $sql);
- return $this->db->query($sql);
- }
-
- /**
- * 执行添加记录操作
- * @param $data 要增加的数据,参数为数组。数组key为字段值,数组值为数据取值
- * @param $return_insert_id 是否返回新建ID号
- * @param $replace 是否采用 replace into的方式添加数据
- * @return boolean
- */
- final public function insert($data, $return_insert_id = false, $replace = false) {
- return $this->db->insert($data, $this->table_name, $return_insert_id, $replace);
- }
-
- /**
- * 获取最后一次添加记录的主键号
- * @return int
- */
- final public function insert_id() {
- return $this->db->insert_id();
- }
-
- /**
- * 执行更新记录操作
- * @param $data 要更新的数据内容,参数可以为数组也可以为字符串,建议数组。
- * 为数组时数组key为字段值,数组值为数据取值
- * 为字符串时[例:`name`='phpcms',`hits`=`hits`+1]。
- * 为数组时[例: array('name'=>'phpcms','password'=>'123456')]
- * 数组的另一种使用array('name'=>'+=1', 'base'=>'-=1');程序会自动解析为`name` = `name` + 1, `base` = `base` - 1
- * @param $where 更新数据时的条件,可为数组或字符串
- * @return boolean
- */
- final public function update($data, $where = '') {
- if (is_array($where)) $where = $this->sqls($where);
- return $this->db->update($data, $this->table_name, $where);
- }
-
- /**
- * 执行删除记录操作
- * @param $where 删除数据条件,不充许为空。
- * @return boolean
- */
- final public function delete($where) {
- if (is_array($where)) $where = $this->sqls($where);
- return $this->db->delete($this->table_name, $where);
- }
-
- /**
- * 计算记录数
- * @param string/array $where 查询条件
- */
- final public function count($where = '') {
- $r = $this->get_one($where, "COUNT(*) AS num");
- return $r['num'];
- }
-
- /**
- * 将数组转换为SQL语句
- * @param array $where 要生成的数组
- * @param string $font 连接串。
- */
- final public function sqls($where, $font = ' AND ') {
- if (is_array($where)) {
- $sql = '';
- foreach ($where as $key=>$val) {
- $sql .= $sql ? " $font `$key` = '$val' " : " `$key` = '$val'";
- }
- return $sql;
- } else {
- return $where;
- }
- }
-
- /**
- * 获取最后数据库操作影响到的条数
- * @return int
- */
- final public function affected_rows() {
- return $this->db->affected_rows();
- }
-
- /**
- * 获取数据表主键
- * @return array
- */
- final public function get_primary() {
- return $this->db->get_primary($this->table_name);
- }
-
- /**
- * 获取表字段
- * @param string $table_name 表名
- * @return array
- */
- final public function get_fields($table_name = '') {
- if (empty($table_name)) {
- $table_name = $this->table_name;
- } else {
- $table_name = $this->db_tablepre.$table_name;
- }
- return $this->db->get_fields($table_name);
- }
-
- /**
- * 检查表是否存在
- * @param $table 表名
- * @return boolean
- */
- final public function table_exists($table){
- return $this->db->table_exists($this->db_tablepre.$table);
- }
-
- /**
- * 检查字段是否存在
- * @param $field 字段名
- * @return boolean
- */
- public function field_exists($field) {
- $fields = $this->db->get_fields($this->table_name);
- return array_key_exists($field, $fields);
- }
-
- final public function list_tables() {
- return $this->db->list_tables();
- }
- /**
- * 返回数据结果集
- * @param $query (mysql_query返回值)
- * @return array
- */
- final public function fetch_array() {
- $data = array();
- while($r = $this->db->fetch_next()) {
- $data[] = $r;
- }
- return $data;
- }
-
- /**
- * 返回数据库版本号
- */
- final public function version() {
- return $this->db->version();
- }
- }
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