| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234 | <?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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