Create excel file without library - php

Question

I using this code:
header( "Content-Type: application/vnd.ms-excel" );
header("Content-Disposition: attachment; filename=liste.xls");
echo "\xEF\xBB\xBF";
and I writing my SQL datas in a while loop like this:
echo "\n<table><tr><td>".$first[$post_a]."</td>\t<td>".$second[$post_a]."</td>\t<td>".$third[$post_a]."</td>\t</td></tr></table>";
When I try to open this created file, excel saying version and type are unmating even so I can open file after this warning on desktop but when I try to open on my phone file can't opening after warning.

Answer 1

You need to something like this here. Also ignore my logic in for-loop, may want to use your own.
$filename = "export_".date("m-d-Y_hia") . ".csv";
ob_end_clean();
$fp = fopen($filename,"w");
$is_header = true;
$no_meta_appnd = array('SKU','Name','Publish','Categories','Description');
foreach ($res as $index => $product){
$arr = array();
if($is_header){ // put all the header in array
foreach ($product as $index => $p){
if(in_array($index,$no_meta_appnd)){
array_push($arr,$index);
}else{
array_push($arr,"Meta: ".$index);
}
}
$is_header = false;
fputcsv($fp,$arr); // add headers
$arr = array(); // empty out array for first row
foreach ($product as $index => $p){
array_push($arr,$p);
}
fputcsv($fp,$arr); // add first row after header
}else{
foreach ($product as $index => $p){
array_push($arr,$p);
}
fputcsv($fp,$arr); // rest of the rows
}
}
//unserialize();
fclose($fp);
// download
// header("Content-Description: File Transfer");
header("Content-Disposition: attachment; filename=".$filename);
header("Content-Type: application/csv; ");
header('Pragma: no-cache');
readfile($filename);
// deleting file
unlink($filename);
exit();