php的二维数组导出到csv需要处理文字编码，代码如下
<?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;
}
?>
