When we use “Image_lib” to create image thumbnail, the default thumbnail file format created should be :

filename_thumb.file_ext

When I use it, I got so many un convenience situation, so I think the thumbnail file format will be better if the format like this :

thumb_filename.file_ext

That file format help me so much in many situation. To change thumbnail file format, we need change the Image_lib file. First, change this line (approx line 38)

var $thumb_marker = ‘_thumb’;

In to

var $thumb_marker = ‘thumb_’;

Second , change this line (approx line 264 )

$this->full_dst_path = $this->dest_folder.$filename.$this->thumb_marker.$file_ext;

In to

$this->full_dst_path = $this->dest_folder.$this->thumb_marker.$filename.$file_ext;

That’s it, the thumbnail file name format will change