phpcms 常用类

<?php /** *  model.class.php 数据模型基类 *  * @copyright(C) 2005-2010 PHPCMS * @licensehttp://www.phpcms.cn/license/ * @lastmodify2010-6-7 */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 $sql查询sql语句 * @returnboolean/query resource如果为查询语句，返回资源句柄，否则返回true/false */final public function query($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();}}

文件位置 phpcms/libs/classes/