You can pass file name with complete xlsx extension.

$grid["export"] = array("format"=>"xls",
"filename"=>"my-file.xlsx", …);

Hi Abu,

Is this depending on the phpgrid version? … because it doesn't work for me

Thanks

It's very old feature and should be available in your version. Make sure you pass same var to set_options.

$grid["export"] = array("format"=>"xls",
"filename"=>"my-file.xlsx",
"heading"=>"Export to Excel Test");

$g->set_options($grid);

If it still does not work, email me code for review at [email protected]