FUCK PHP IS A WHORE

I want to read the subject.txt, but it's 1,5 mebibyte of data that I don't want to be read every time I run the script. How do I make it read the file lazily?

>>4
http://pl2.php.net/manual/en/function.file.php
Reads an entire file into an array.
Entire file, you anus!