EBNF Parser - A pragmatic approach
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COPYRIGHT (c) 2014 Adrian M. Partl
built on: pragmatic-parser.php (https://code.google.com/p/pragmatic-parser/):
          COPYRIGHT (c) 2011 Richard Keizer

This is a pragmatic attempt to build a EBNF parser for PHP, following the spirit
of the underlying original project: pragmatic-parser.php by Richard Keizer.

Please see the examples for inspiration on how to use this piece of code.

Contrary to pragmatic-parser, this parser produces a parse tree with PHP arrays.