Creating PDF on the fly with the PDFlib library Formula was removed
Last version was
php56-pdflib requires the following formulae to be installed:
autoconf 2.69 Automatic configure script builder
pdflib-lite 7.0.5p3 Subset of the functionality of PDFlib 7

Recent formula history

ilovezfs php56: migrate to homebrew/core (#4835)
ilovezfs php56-pdflib: bottle revision to rebuild.
Andy Blyler php5*-pdflib: fix up extension name to fix tests
Andy Blyler fix style issues
Andy Blyler php56-pdflib: convert from sha1 to sha256

Formula code at GitHub