Here is what Im attempting....
$size = filesize("chat/chat.txt"); // get size of file
if (filesize("chat/chat.txt") > 500) { // if over x bytes chop it down
$fp = fopen("./chat/chat.txt", "r+"); // open a fp
$count = 0; // setup a count
while (!@feof($fp) && ($count < 2)) { //if not eof & < 2
rewind($fp); // go to beginning
$bytes = fgets($fp, 4096); // get the # of bytes in line
ftruncate($fp, $bytes); // kill line with # of bytes
$count = $count + 1; // increment count
} // end while loop
fclose($fp);
// close fp
}
// close if
here is what is happening currently, when the file goes over 500 bytes,
the whole file gets dumped, not what I want. The form Im using can only
put out 109 bytes plus /n total. In this example (if you want to call
it one), I would like it to kill the first 2 lines in the file. Thanks
to Hughes for putting me on to this, its a little clearer...
Gerard Samuel wrote:
> You know what, I think Im explaining myself wrong. The word truncate in
> itself means I believe to cut at the bottom. This isn't what I need.
> Basically, its a chat script and all the newer messages are at the
> bottom, and when the file reaches x bytes I want to 'cut off the head'
> of the file by x lines. leaving the most current messages at the bottom
> alone.
> Ive been messing around with truncate all this time getting the wrong
> results. Why cant files be as easy as databases.... :)
> If any one has a clue please point it to me.
> Meantime, back to the manual.....
> Thanks
>
> Sterling Hughes wrote:
> > On Fri, 7 Sep 2001, Gerard Samuel wrote:
> >
> >
> >>Can a file be truncated from the beginning, and by x amount of lines??
> >>Thanks
> >>
> >>
> > Truncated from the beginning? Do you mean truncate the file by X
> > lines, starting from the first position in the file, well, yeah:
> >
> > <?php
> > $fp = fopen("filename", "r+");
> >
> > // Start counting from 0, set to one, if you want to start counting
> > // from 1
> > $count = 0;
> >
> > while (!@feof($fp)) {
> > // Not used, but unless your line lengths are longer than
> > // 4K, this will effectively skip over a line
> > $line = fgets($fp, 4096);
> >
> > if (++$count == $line_number_you_want) {
> > ftruncate($fp, ftell($fp));
> > }
> > }
> >
> > fclose($fp);
> > ?>
> >
> > Please note the above is devoid of error checking :)
> >
> > -Sterling
> >
> >
> >
>
>
>
>
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