append before EOL with fwrite()

Anon

hi,

maybe it's a dull question, but anybody knows how to append a string (n lenght) to the end (before the new line) of a line inside a plain text file ?

the point is that everything i've tryed just overwrites, instead of appending. if it helps, the piece of code is:

// opens the file in read/write with fp at the begining
$fh_nicks = fopen('chico.txt', 'r+');

// get a line from fp
$linea = fgets($fh_nicks, 4096);

// move -1 bites, so it positions fp just before the \n
fseek($fh_nicks, -1, SEEK_CUR);

// writes the string i want to append. here is where the problem
// shows up.
fwrite($fh_nicks, ":hola");

// puts fp at the begining of the next line
fseek($fh_nicks, 1, SEEK_CUR);

// closes the fh
fclose($fh_nicks);

thanks in advace,
oscar

Anon

Do you need to do this with fwrite? Why not just read in the file modifying each line, then output the whole thing at the end?

// opens the file in read/write with fp at the begining
$fh_nicks = fopen('chico.txt', 'r+');

// get a line from fp
$linea = fgets($fh_nicks, 4096);

<b>
// Append to the end of the line
$line = preg_replace("/$/", $string, $line);
$file .= $line;
</b>

// closes the fh
fclose($fh_nicks);

<b>
// Re-open the file and write over it.
$fh_nicks = fopen('chico.txt', 'w');
fputs($fp, $file);
fclose($fh_nicks);
</b>

Anon

i know that's possible, but it's not 'the best way'. what happends if the line you want to modify is at the begining of the a 15 mb file ? it'd mean re-writing the whole file ! for small files that's ok, but for big ones it isn't. it'd be a lost of time and processor.

isn't there any other way to do that ?