The PECL/haru extension provides bindings to the libHaru library. libHaru is a free, cross platform, and Open Source library for generating PDF files.
The Haru library (libHaru) may be found here: ยป http://libharu.org.
This extension is EXPERIMENTAL. The behaviour of this extension including the names of its functions and any other documentation surrounding this extension may change without notice in a future release of PHP. This extension should be used at your own risk.