<?php

$data=array(

    array("username"=>"test1","password"=>"123"),

    array("username"=>"test2","password"=>"456"),

    array("username"=>"test3","password"=>"789"),

);

export_csv($data);

function export_csv($data)

{

    $string="";

    foreach ($data as $key => $value)

    {

        foreach ($value as $k => $val)

        {

            $value[$k]=iconv('utf-8','gb2312',$value[$k]);

        }

        $string .= implode(",",$value)."\n"; //用英文逗号分开

    }

    $filename = date('Ymd').'.csv'; //设置文件名

    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 $string;

}

?>