Thumb Helper for CodeIgniter
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config added autoload and changed spark version Jul 15, 2012
helpers Last try for spark creation. Dec 14, 2011 License file added. Feb 28, 2012 adjusted argument order and updated comments Nov 13, 2011 added autoload and changed spark version Jul 15, 2012


  1. Download the repository;

  2. Copy thumb_helper.php to your ./application/helpers/ folder;

That's it, your good to go.


  1. Loading the Helper



After uploading a image you have access to an simple array that has all the information about your image.

Like this:

$image_data = $this->upload->data();

Info on $image_data:

array on $image_data

More information about this here: Codeigniter/user_guide/libraries/file_uploading

For now you can pass 4 params to the thumb helper:

  1. Image data from upload;

  2. Width

  3. Height

  4. Destination path

  5. Maintain Aspect Ratio

like this:

create_thumb($image_data, '100', '150', '.public/images/thumbs/', TRUE);

Keep in mind that the 3rd param is optional. If only two params are passed to the thumb helper the thumb will resize the image maintaining the ratio. If theres a 3rd param then, by default the aspect ratio will not be maintained unless the 5th parameter is set to TRUE.

After the creation the thumb helper will return an array with the following content:

path -> The full path to the image;

thumb_marker -> The marker for the thumb, for now will always be equal to the thumb sizes that were passed to the thumb helper;

thumb_name -> The final name of the thumb;

I made this return in case someone needed to sent some of these values to the database for example.


For that insted of passing the array from image upload you can just pass the path to the file (including the file).


create_thumb('./public/images/myimage.jpg', '100', '150');


version 1.0.2

  • Added explicit option for maintaining aspect ratio when height and width are both specified

version 1.0.1

  • Resize image from remote file;

  • Added possibility to choose a different destination path;

version 1.0

  • Resize image after upload with image data;

  • Use just width or both width ad height;

  • Return information about the thumbnail (path / thumb_marker / thumb_name )


  • Create crop functions;