An optimizing Brainfuck parser & interpreter written in PHP.
Brainfuck is an extremly minimal, esoteric programming language consisting of
only eight simple commands, a data pointer and an instruction pointer.
Read more about Brainfuck here:
Brainfuck - Wikipedia
This project is essentially a parser & interpreter for this programming
language. The term "optimizing" means that I use special optimization techniques
to improve the performance of the Brainfuck program execution.
This is a rework of a very old project of mine, which was actually the first
project I ever uploaded to GitHub!
If you want to see the old version, check out the
old-version
tag.
But be warned of the bad and slow code :D
- PHP 8.2 or newer
Download the repository and then run composer to set up the autoloader:
$ composer installAfterwards, run any of the examples using ./bin/bf:
$ ./bin/bf ./examples/<example>.bfFor example, lost-kingdom.bf is pretty fun:
$ ./bin/bf ./examples/lost-kingdom.bfMake sure to check out all the other example programs I have uploaded!
As far as I can see, this is one of, if not THE fastest PHP Brainfuck parser & interpreter around:
$ php -v
PHP 8.2.14 (cli) (built: Dec 21 2023 20:19:23) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.2.14, Copyright (c) Zend Technologies
with Zend OPcache v8.2.14, Copyright (c), by Zend Technologies
$ time ./bin/bf ./examples/hanoi.bf
real 0m15,946s
user 0m15,881s
sys 0m0,056s
$ time php -dopcache.enable_cli=1 -dopcache.jit_buffer_size=100M -dopcache.jit=1255 ./bin/bf ./examples/hanoi.bf
real 0m9,347s
user 0m9,296s
sys 0m0,040sAs you can see, the hanoi.bf Brainfuck program only
takes 9 seconds to run on my machine, which is pretty damn fast compared
to where this project started at (7 whole minutes) and compared to other PHP
Brainfuck parsers & interpreters I could find on the internet!