How to export Excel files with php+mysql

How to use it? php+mysql I won't say much about printing data . Just say how to export data to excel

ob_end_clean();// 
$file_name=' data .xls';
$userBrowser = $_SERVER['HTTP_USER_AGENT'];
if ( preg_match( '/MSIE/i', $userBrowser ) ) {
    
$filename = urlencode($filename);
}
$filename = iconv('UTF-8', 'gb2312', $filename);
header("<meta http-equiv='X-UA-Compatible' content='IE=Edge'>");
header("<meta http-equiv='content-type' content='text/html;charset=uft-8'>");
header("Content-Type: application/vnd.ms-excel");
header("Expires:0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("content-disposition: attachment;filename={
      $file_name}");
header( "Cache-Control: public" );
header( "Pragma: public" );
header( "Content-type: text/csv" ) ;
header( "Content-Dis; filename={
      $file_name}" ) ;
echo " full name "."\t";  
echo " Telephone "."\t";    
echo "\t\n"; 
$dsql->SetQuery($sql);// take SQL Query statement formatting 
$dsql->Execute();// perform SQL operation 
// Here, the results in the execution query are output circularly . You can cycle out data according to your program 
while($row = $dsql->GetArray()){
    
echo $row['title']."\t";
echo $row['tel']."\t";
echo "\t\n"; 
}

This exported data , similar csv Format , use wps Open it, no problem .
For reference only