1. <?php 
2.     $handle = fopen("file.txt", "w"); 
3.     fwrite($handle, "text1....."); 
4.     fclose($handle); 
5.  
6.     header('Content-Type: application/octet-stream'); 
7.     header('Content-Disposition: attachment; filename='.basename('file.txt')); 
8.     header('Expires: 0'); 
9.     header('Cache-Control: must-revalidate'); 
10.     header('Pragma: public'); 
11.     header('Content-Length: ' . filesize('file.txt')); 
12.     readfile('file.txt'); 
13.     exit; 
14. ?>