random acces file using php

[tukang_minta]

Hi there,

i have a big file txt to read(about 40 Mb), and i have read this file, suddenly i realise that my methode to read file is using sequential access mode, but the process is to long and i need the methode to read in random access with php, i heared that random access is more fastest than sequential access, where i can get the tutorial about file operations (random access mode) using php.
Because it's very little informations that i can get from php manual about random access mode or i don't the right place or right site to get is informations.

thanx

[pjleonhardt]

to the best of my knowledge you can't use RAF with PHP, tho i have been wrong before

[tukang_minta]

what's RAF php, can you explain to me about RAF php.

[tukang_minta]

Sorry RAf is "random acces file", i am so comfuse until don't know What is RAF, so i can not use RAF, if i can not use RAF what is the best methode to read a large file with php, so i just read a part of file not the entire file.