dompdf is an HTML to PDF converter. At its heart, dompdf is (mostly) a CSS 2.1 compliant HTML layout and rendering engine written in PHP. It is a style-driven renderer, it will download and read external stylesheets, inline style tags, and the style attributes of individual HTML elements. It also supports most presentational HTML attributes. PDF rendering is currently provided either by PDFLib or by a bundled version the R&OS CPDF class written by Wayne Munro. (Some important changes have...
lib_data_io is a set of PHP libraries designed to easily move complex sets of data between PHP array data structures and a variety of sources and destinations including JSON, XML, ICAL, MySQL, HTML, Trac WIKI, text, LDIF, and plot images.
A lightweight image manipulation library written in PHP
...Zebra_Image's code is heavily commented and generates no warnings/errors/notices when PHP's error reporting level is set to E_ALL.
With this library you can rescale, flip, rotate and crop images. It supports loading and saving images in the GIF, JPEG and PNG formats and preserves transparency for GIF, PNG and PNG24.