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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