PHP/File Directory/rewind

rewind and fseek

 
<?
    $filename = "data.txt";
    $handle = fopen($filename, "w+");
    fwrite($handle, "Mnnkyys\n");
    rewind($handle);
    fseek($handle, 1);
    fwrite($handle, "o");
    fseek($handle, 2, SEEK_CUR);
    fwrite($handle, "e");
    fclose($handle);
?>