excel导入导出封装

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";
}

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;