Can i edit or delete a line from a txt file by php

Question

Example : there is a txt file which has text like
"The day was enjoyable
I saw the birds
Flying over my path
Creating a fine little shadow moving shadow
On the path to my beautiful home"

And i want to delete the 3rd line by php and after that text file should have

"The day was enjoyable
I saw the birds
Creating a fine little shadow moving shadow
On the path to my beautiful home"

Answer 1

Thanks Martin Taylor your answer really means lot to me thanks for your help bro..

Answer 2

Martin Taylor
So we can change a part of the file without overwriting the whole file(like an array)
Did I get it right?

Answer 3

Martin Taylor it seems it's possible to do in java with RandomAccessFile
https://docs.oracle.com/javase/7/docs/api/java/io/RandomAccessFile.html#writeChar(int)
i heard that only two methods exists for changing a file "rerwite" and "append", if true ,How does this class work?