php生成CSV格式，转

参考网址：

php对csv文件的常用操作集合

http://blog.xhbin.com/archives/748

1，下载CSV格式文档

唯一需要特别注意的是编码。

 1 <?
 2 include_once("conn/conn.php");//连接数据库
 3 
 4 $EXCEL_OUT="id,title,info\n";//生成字段
 5 
 6 $query="select * from tb_info";//需要生成的数据查询语句
 7 $result=mysql_query($query);
 8 while($ROW=mysql_fetch_array($result))
 9 {
10    $id"];
11    $title=$ROW["title"];
12    $content=$ROW["content"];
13 
14     $EXCEL_OUT.=iconv('UTF-8','GB2312',"$id,$title,$content\n");
15 }
16 
17 header("Content-type:text/csv"); 
18 header("Content-Disposition:attachment;filename=生成文件名称.csv"); //“生成文件名称”=自定义
19 header('Cache-Control:must-revalidate,post-check=0,pre-check=0'); 
20 header('Expires:0'); 
21 header('Pragma:public'); 
22 echo $EXCEL_OUT;
23 ?>

2，生成.csv文件（不下载）

 1 $action = $_GET['action'];
 2 if ($action=='make'){
 3  $fp = fopen("csv.csv","a"); //打开csv文件，如果不存在则创建
 4  $data_arr1 = array("10001","10002","10003","10004","公司"); //第一行数据
 5  $data_arr2 = array("20001","20002","20003","20004","中午"); //第二行数据
 6  $data_str1 = implode(",",$data_arr1); //用 ' 分割成字符串
 7  $data_str2 = implode(",",$data_arr2); //用 ' 分割成字符串
 8  $data_str = $data_str1."\r\n".$data_str2."\r\n"; //加入换行符
 9  
10  fwrite($fp,iconv('UTF-8','GB2312',$data_str)); //写入数据
11  fclose($fp); //关闭文件句柄
12  echo "生成成功";
13 }
14 echo "<br>";
15 echo "<a href='?action=make'>生成csv文件</a>"; 
16 
17 
18 //批注：由于涉及文件读写，所以有权限要求。比如通过http方式是无法创建该文件的。（可以通过php file.php方式）

附：iconv 用法

string iconv ( string $in_charset , string $out_charset , string $str )

iconv — Convert string to requested character encoding

参数：

1，in_charset 输入字符串的编码

2，out_charset 输出字符串的编码

If you append the string //TRANSLIT to out_charset transliteration is activated. This means that when a character can't be represented in the target charset, it can be approximated through one or several similarly looking characters. If you append the string //IGNORE, characters that cannot be represented in the target charset are silently discarded. Otherwise, str is cut from the first illegal character and an E_NOTICE is generated.

3，str 被转码的字符串

返回值：

返回转码后的字符串或false（返回失败时）。

可能会用到两个可选的辅助参数：IGNORE和TRANSLIT

例如：iconv("UTF-8","GB2312//IGNORE",$data)