PHP导出csv文件

$data = [  [标题1,标题2],[内容1,内容2],[内容1,内容2]];
$fp=fopen('php://memory','w+'); // open up write to memory
foreach($data as $row){
    $convertedRow=array();
    foreach($row as $val){
        $convertedRow[]=iconv('utf-8','gbk',$val)."\t";//防止中文乱码,防止打开文件时显示科学计算法（只针对长数字字符串有效）
    }
    fputcsv($fp,$convertedRow);
}
rewind($fp);
$csvFile=stream_get_contents($fp);
fclose($fp);
ob_clean();
$fileName = 'card_port_'.date('YmdHis').'.csv';
header('Content-Type: text/csv; charset=utf-8');
header("Content-Transfer-Encoding: binary ");
header("Content-Type: application/force-download");
header('Content-Length: '.strlen($csvFile));
header('Content-Disposition: attachment; filename="'.$fileName.'"');
echo ($csvFile);

你也可以不写文件，直接把内容用,号隔开，每一行就用\n换行就可以

foreach($data as $row){
    $convertedRow=array();
    foreach($row as $val){
        $convertedRow[]=iconv('utf-8','gbk',$val)."\t";
    }
    $csvFile.=implode(',',$convertedRow)."\n";
}