php导入导出cvs文件格式

1、导入

<?php

header("Content-type: text/html; charset=gb2312");   

$fname = $_FILES['myfile']['tmp_name']; 

error_reporting(0);// 导入csv格式的文件 

$connect=mysql_connect("localhost","root","***") or die("could not connect to database"); 

mysql_select_db("mydb",$connect) or die (mysql_error()); 

mysql_query("set names 'gbk'"); 

if(file_exists($fname)){

    $handle = fopen($fname, 'r'); 

    $result = input_csv($handle); //解析csv 

	$len_result = count($result); 

	if($len_result==0){ 

        echo '没有任何数据！'; 

        exit; 

    } 

	for ($i = 1; $i < $len_result; $i++) { //循环获取各字段值,从1开始，不插入第一行表头

        //$name = iconv('gb2312', 'utf-8', $result[$i][0]); //中文转码 

        //$sex = iconv('gb2312', 'utf-8', $result[$i][1]); 

		$name  =  $result[$i][0];

		$sex  =   $result[$i][1];

		$age = $result[$i][2]; 

		$data_values .= "('$name','$sex','$age'),"; 

    } 

    $data_values = substr($data_values,0,-1); //去掉最后一个逗号 

	fclose($handle); //关闭指针 

	$sql  =	 "insert into student (name,sex,age) values $data_values";

	$query = mysql_query($sql);

	 if($query){ 

        echo '导入成功！'; 

    }else{ 

        echo '导入失败！'; 

    }
}else{

	echo "文件不存在，请重新选择";exit;

}

function input_csv($handle) { 

    $out = array (); 

    $n = 0; 

    while ($data = fgetcsv($handle, 10000)) { 

        $num = count($data); 

        for ($i = 0; $i < $num; $i++) { 

            $out[$n][$i] = $data[$i]; 

        } 

        $n++; 

    } 

    return $out; 

} 

?>

　　

2、导出

$result = mysql_query("select * from student order by id asc");
$str = "姓名,性别,年龄\n";
$str = iconv('utf-8','gb2312',$str);
while($row=mysql_fetch_array($result))
{
    $name = iconv('utf-8','gb2312',$row['name']); //中文转码
    $sex = iconv('utf-8','gb2312',$row['sex']);
    $str .= $name.",".$sex.",".$row['age']."\n"; //用引文逗号分开
}
$filename = date('Ymd').'.csv'; //设置文件名
export_csv($filename,$str);

function export_csv($filename,$data)
{
      header("Content-type:text/csv");
      header("Content-Disposition:attachment;filename=".$filename);
      header('Cache-Control:must-revalidate,post-check=0,pre-check=0');
      header('Expires:0'); header('Pragma:public');
      echo $data;
}

　　

附：数据库sql文件

CREATE TABLE `student` (
  `id` int(11) NOT NULL auto_increment,
  `name` varchar(50) NOT NULL,
  `sex` varchar(10) NOT NULL,
  `age` smallint(3) NOT NULL default '0',
  PRIMARY KEY  (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8;