Trying to read a text file and save it as X files all Y lines long...

[physaux]

Hey guys, I'm trying to open a file, and save it to however many files, with $numlines lines each. Can anyone advise me the most "efficient way to do it"

 

I am thinking of...

-reading it line by line with a counter, then saving the files into pieces.

 

Is that a efficient way of doing it? Because I will be dealing with 200k+ lines in a single text file, and I don't want to blow up my shared server, or get a "timeout" on my page. Thanks!

[RussellReal]

you're better off doing it the way you're planning on doing it, otherwise you'd be calling fread 200k+ times instead of just buffering the whole content and working it out.. BUT what I can say is.. close every file resource you create or that will set flags off on your webhosting that you'd using too much cpu time and they'll  lock your account..

[sasa]

on my netbook this code

<?php
$t = microtime(1);
$test = file('tolstoy.txt');//65k lines
$test = array_merge($test, $test);
$test = array_merge($test, $test);
$test = array_chunk($test, 1000);
$name = 'part';
$i = 0;
foreach ($test as $part){
$i++;
$f = fopen('part'.$i.'.txt', 'w');
$part = implode("\n",$part);
fwrite($f, $part);
fclose($f);
}
echo microtime(1)-$t," $i";
?>

output

1.6787929534912 262