Showing image or colour in Excel

[pankajit09]

Hello,

I am generating an Excel file by changing the header and then sending data.
The data is in tabular format.
In the data there is a link for an image file. How to show the image in the Excel ?

If its not possible then how to colour that column which has an image ?

$data=file_get_contents($filename);
 
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false);
header("Content-type: text/CSV");
header("Content-Disposition: attachment; filename=$filename");
header("Content-Description: PHP Generated Data");
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".strlen($data));
set_time_limit(0);
 
echo $data;

[pankajit09]

Actually its a CSV not an excel.