导出csv

@mkdir("Public/SjhdDlsDc",0777);//创建文件夹
$datex=date('Ymdhis')."_".$dcsl;//文件名
$filename="Public/SjhdDlsDc/".$datex.".csv";
$filename_x=$datex.".csv"; 
$of = fopen ( $filename, 'w' );
$content=iconv("utf-8","gb2312","a,b,c,d"."\r\n");


$content.=iconv("utf-8","gb2312","\t 1,"."\t 2,"."\t 3,"."\t 4\r\n");


    if ($of) {
fwrite ( $of, $content );
}