Modify Text files

I figure out how to write all the entries from my database onto a text file.

header("Content-Type: text/plain");
header("Content-Disposition: Attachment; filename=test.txt");
header("Pragma: no-cache");

How do I modify the text file??
Each entries (or row) have 5 elements in it and there are multiple entries in my database.
How do I write each elements follow by a comma onto a text file? Each row in the database would have a new line in my text file as well.


Start with fetching the results from the database first (using a while, or foreach, or for loop), once you have that, you will use fopen (before your loop), and fwrite (inside your loop), then fclose (after your loop).

If you need a more thorough example, let me know.

I’m thinking putting all my sql onto an array then read each element with a for/while loop
But how do I break up each element in the entries, so I can read it??