random access file with php

Hi there, I have a big file txt to read(about 40 Mb), and i have script to read this file, suddenly i realise that my methode to read file is using "sequential access" mode, but this process take time to long(max_time_execution = 90) 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(they told to use fseek) or i don't the right place or right site to get this informations. thanx __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/