Insert into beginning of a file

Anon

Hi there php-geeks! 😃

I'm working on a image gallery where the visitors should be able to post their own comments on the pictures, and their comments should be viewable on the page.

I'm using the followin code snippet to insert the user-data into the comments file:

$fp = fopen (basename($absoluteurl) . ".comments", "a");
fwrite ($fp, $message );
fclose ($fp);

The problems is, that the data is appended to the file, and not inserted at the begining of the file. When I try to use "w" instead of "a" in fopen, it truncates the file, and all the old data is gone. Is there a simple way of iserting data at the begining of a file and still not truncate the old data away?? (I tried to use "aw", but that did not work either).

If you care to answear, a working code snippet would be of great help, since I'm a complete newbie!

Cheers! 😃

-- anders

[deleted]

Have a peek at this:
http://www.xs4all.nl/~vinny/index.html#2

Anon

Writing to the beginning of the file is highly impractical.

If you file isn't too big and is not used extensively. Than this is what I'd do.

<?
$fp=fopen("yourfile", "r");
$file_data=fread($fp, filesize("yourfile"));
fclose($fp);

Than you open file again
$fp=fopen("yourfile", "w");

This time the whole file will be wiped out.

Than write the information that you wish to be at the top.

$fwrite($fp, "string_to_be_at_the_top");
$fwrite($fp, "\n");

Now write previous data from the file that is stored in the memory.

$fwrite($fp, $file_data);

fclose($fp);

I don't know for sure, but you can simplify
fopen() procedure by doing

$fp=fopen("yourfile", "r+");

Overall it is not a wise thing to do, but use it as you wish,