Excel导入导出

1.导入

    public function excel_put(){    
        //先做一个文件上传，保存文件    
        $path=$_FILES['file'];    
        $filePath = "uploads/".$path["name"];    
        move_uploaded_file($path["tmp_name"],$filePath);    
        //默认用excel2007读取excel，若格式不对，则用之前的版本进行读取    
        //表格字段名字    
        $data=array('B'=>'name','C'=>'pwd','D'=>'money1','E'=>'salt');    
        $tablename='user1';//表名字    
        $this->excel_fileput($filePath,$data,$tablename);        
    }    
    private function excel_fileput($filePath,$data,$tablename){    
        $this->load->library("phpexcel");//ci框架中引入excel类    
        $PHPExcel = new PHPExcel();    
        $PHPReader = new PHPExcel_Reader_Excel2007();    
        if(!$PHPReader->canRead($filePath)){    
            $PHPReader = new PHPExcel_Reader_Excel5();    
            if(!$PHPReader->canRead($filePath)){    
                echo 'no Excel';    
                return ;    
            }    
        }    
        // 加载excel文件    
        $PHPExcel = $PHPReader->load($filePath);    
        
        // 读取excel文件中的第一个工作表    
        $currentSheet = $PHPExcel->getSheet(0);    
        // 取得最大的列号    
        $allColumn = $currentSheet->getHighestColumn();    
        // 取得一共有多少行    
        $allRow = $currentSheet->getHighestRow();    
        
        // 从第二行开始输出，因为excel表中第一行为列名    
        for($currentRow = 2;$currentRow <= $allRow;$currentRow++){    
            /**从第A列开始输出*/    
            //echo $allColumn;    
                
            for($currentColumn= 'A';$currentColumn<= $allColumn; $currentColumn++){      
                $val = $currentSheet->getCellByColumnAndRow(ord($currentColumn) - 65,$currentRow)->getValue();    
                //print_r($val);    
                //die;    
                    
                if($currentColumn == 'A')    
                {    
                    //echo $val."\t";    
                }else if($currentColumn <= $allColumn){    
                    $data1[$currentColumn]=$val;    
                }    
            }    
            foreach($data as $key=>$val){    
                $data2[$val]=$data1[$key];    
            }    
            $this->db->insert($tablename,$data2);    
            //print_r($data2);    
            //echo "</br>";           
        }    
        //echo "\n";    
        echo "导入成功";    
    }    

2.导出

    header("Content-type:application/vnd.ms-excel");    
    header("Content-Disposition:attachment;filename=123.xls");    
        
    $array=$this->db->get("shop_address")->result_array();    
    $str = "Id\tName\tPid\n";    
    foreach ($array as $val) {    
        $str .=  $val['id'] . "\t" .$val['name'] . "\t" . $val['pid'] . "\n";    
    }    
    echo $str;      

大功告成