I just put up another fclib release. Fclib is an ad hoc collection of php libraries, started about 10 years ago; the i18n-related functions are perhaps of most interest to people (with functions for Japanese, Chinese and Arabic language processnig).
This new release has some minor bug fixes, a new utf8 function (for truncating a string), and a new file, modify_images.inc, that is a high-level interface to use gd functions to make doing thumbnails, cropping, resizing and basic drawing edits. It can operate on one or a batch of images.
(The previous release was 11 months ago, described here)