fwrite one line

Hello,

<?
$file=file("somefile.dat");
print ("$file[9]");
fclose($file);
?>

Gives me the 9th line of somefile.dat

I would like to overwrite this line, but only the 9th, not the others.

I tried this:

<?
$file=file("somefile.dat");
$file_write = fwrite($file[9], "$data");
fclose($file);
?>

but it doesn't work, how do I have to do this?

Thankx!

file is a shortcut function for fopen ... fread ... fclose, only for reading, in a comfortable one-step way.

you don't have to close a file "opened" with file(). it's already included in that function.

have a look at fopen, fread, fwrite, there are the examples how to do this technically.

in order to replace just one line, you'll have the whole file again, with the updated line in it.

should read: "you'll have to fwrite", sorry.

I think this is what you want:
error_log($file[9], 3, "somefile.dat");