Opening and Writing to a Text File.

[Anon]

Say I have a text file, scott.txt. This text file contains one number, 14. Now I have variable $addit which is 23. How do I:

1) Add Them
2) Overwrite 14 to make 37?

Thanks!

[sp0rk]

Relevant pieces picked out from the manual...

$addit = 23;
$filename = "scott.txt";

$fd = fopen($filename, "r");
$number = fread($fd, filesize($filename));
fclose ($fd);

$result = $number + $addit;

$fd = fopen($filename, "w");
fwrite($fd, $result);
fclose ($fd);

[Anon]

I would suggest:

$addit = 23;
$filename = "scott.txt";

$fd = fopen($filename, "r+");
$number = fread($fd, filesize($filename));
ftruncate($fd, 0);
rewind($fd);
fwrite($fd, $number + $addit);
fclose($fd);

to minimize the number of fopen() calls

[sp0rk]

Sure, that's "better", but if someone asks about basic stuff, I give a very basic solution. =)