Richard Heyes has thrown together some code for a simple thing that he's seen developers request over and over again - moving to/reading from a specific line in a file.

After reading something on the php-general list I decided that a) I'm bored, and b) I'll write something which handles it. So here it is.

His code is simple - looping through the lines of the file until it locates your desired target (with some error checking along the way). Plus, if it's already fetched, it keeps it in a cached array for future retrieval.