[Resolved] replace last 50 chars of a text file

[mhalloran]

I'm trying to write some code to erase the last 50 chars of a text file and then appent text to it. This is what I have so far but it seems buggy:

$fp = fopen ($file_name, "a+"); 
fseek($fp, -50, SEEK_END);
ftruncate ($fp, -50);
fwrite($fp, $new_data);

I think that I had it working at one point but now it rewrites the erases most of the file.

Any ideas?

[HalfaBee]

ftruncate() truncates the file to a given size.
You need to do

ftruncate( $fp , ftell( $fp ) );

HalfaBee

[mhalloran]

Thanks alot - just what I was looking for!