PHP appending to file from specific position

Question

In php i am opening a text file and appending to it. However I need to append 3 chars before the end of file. In other words i need to append/write from a specific place in

Answer 1

If it's a short text file and you are only doing this once you can read in the contents (with fread()), store it only upto 3 chars from the end using substring and then append your new content onto the end of that and write.

But as I say if this is a regular thing and/or with large files, this isn't the best approach. I'll have a think.

Hope this helps