2018-07-21 20:58:36浏览 2826
<?phpabstractclass Model{ protected$pk = 'id'; protected$_ID = null; protected$_tableName; protected$_arRelationMap; protected$_modifyMap; protected$is_load = false; protected$_blForDeletion; protected$_DB; publicfunction __consturct($id = null){ $this->_DB = mysql_connect('127.0.0.1','root','') ; $this->_tableName = $this->getTableName(); $this->_arRelationMap = $this->getRelationMap(); if(isset($id))$this->_ID = $id; } abstractprotectedfunction getTableName(); abstractprotectedfunction getRelationMap(); publicfunction Load(){ if(isset($this->_ID)){ $sql = "SELECT "; foreach($this->_arRelationMap as$k => $v){ $sql .= '`'.$k.'`,'; } $sql .= substr($sql,0,strlen($sql)-1); $sql .= "FROM ".$this->_tableName." WHERE ".$this->pk." = ".$this->_ID; $result =$this->_DB->mysql_query($sql); foreach($result[0] as$k1 => $v1){ $member = $this->_arRelationMap[$key]; if(property_exists($this,$member)){ if(is_numeric($member)){ eval('$this->'.$member.' = '.$value.';'); }else{ eval('$this->'.$member.' = "'.$value.'";'); } } } } $this->is_load = true; } publicfunction __call($method,$param){ $type = substr($method,0,3); $member = substr($method,3); switch($type){ case 'get': return$this->getMember($member); break; case 'set': return$this->setMember($member,$param[0]); } returnfalse; } publicfunction setMember($key){ if(property_exists($this,$key)){ if(is_numeric($val)){ eval('$this->'.$key.' = '.$val.';'); }else{ eval('$this->'.$key.' = "'.$val.'";'); } $this->_modifyMap[$key] = 1; }else{ returnfalse; } } publicfunction getMember($key,$val){ if(!$this->is_load){ $this->Load(); } if(property_exists($this,$key)){ eval('$res = $this->'.$key.';' ); return$this->$key; } returnfalse; } publicfunction save(){ if(isset($this->_ID)){ $sql = "UPDATE ".$this->_tableName." SET "; foreach($this->arRelationMap as$k2 => $v2){ if(array_key_exists( $k2, $this->_modifyMap)){ eval( '$val = $this->'.$v2.';'); $sql_update .= $v2." = ".$val; } } $sql .= substr($sql_update,0,strlen($sql_update)); $sql .= 'WHERE '.$this->pk.' = '.$this->_ID; }else{ $sql = "INSERT INTO ".$this->_tableName." ("; foreach($this->arRelationMap as$k3 => $v3){ if(array_key_exists( $k3,$this->_modifyMap)){ eval('$val = $this->'.$v3.';'); $field .= "`".$v3."`,"; $values .= $val; } } $fields = substr($field,0,strlen($field)-1); $vals = substr($values,0,strlen($values)-1); $sql .= $fields." ) VALUES (".$vals.")"; } echo$sql; //$this->_DB->query($sql); } publicfunction __destory(){ if(isset($this->ID)){ $sql = "DELETE FROM ".$this->_tableName." WHERE ".$this->pk." = ".$this->_ID; // $this->_DB_query($sql); } }}class User extends Model{ protectedfunction getTableName(){ return "test_user"; } protectedfunction getRelationMap(){ returnarray( 'id' => USER_ID, 'user_name'=> USER_NAME, 'user_age' => USER_AGE ); } publicfunction getDB(){ return$this->_DB; }}$UserIns = new User();print_r($UserIns);?>