A PHP interpreter for Brainfuck.
An example for printing out Hello world with Brainfuck
<?php
include 'interpreter.php';
// Create instance
$program = BrainfuckInstance::getInstance();
// Execute operations from file
$program->invokeFile('helloworld.bf');
// Execute operations from string
$program->invokeCommand('++');
// Print out program output
echo $program->getOutputBuffer();