Erasing 1 line from a file

[Anon]

I am making a simple little script that will remove an articles data file, and the links to it. The links to the article are in a simple, flat text file, and I need to delete the appropriate line of HTML so it doesn't link to the article anymore.

I have tried using 'ereg_replace' for the entire line, but for some unknown reason it failed to clear any line.

If you could give me a suggestion on how to do this, that would be great. I have asked around among some of my friends who know a quite a bit about PHP, but still have not got it working.

(The list file is sorted alphabetically, and each line begins with a code like this: <!-- geforce3 -->)

[kparker]

If it's a text file, you can't directly remove a line from the file. Instead, you need to read the entire file in, remove the line, and then rewrite the file without the line. (Or, read and write the file line by line, omitting to write the line when you discover the one to remove.)

This is all easily done with the filesytem functions, but if you find yourself doing lots of this stuff on your site then you would be far better served by using a dbms such as MySQL or PostgreSQL.