Abkürzung

[dedlfix]

echo $begrüßung;

Ach, Brainfuck...  Whitespace ist noch cooler. Da das Forum aber mit Whitespace-Code nicht sehr pfleglich umgeht, gibts hier meinen eben auf die Schnelle zusammengehackten Brainfuck-Interpreter. (PHP 5 erforderlich)

  
<?php  
  
$code = <<<CODE  
+++[>++++[->++++++<]<-]>>.<++[>---<-]>-.<+++[->+++<  
]>++..+++.<<++++[->+++++[->--<]<]>+++[>--<-]>-.<<++  
++++[->>+++++++++<<]>>--.-----.<++++[>----<-]>+++.<  
+++[->++<]>+.<+++[->---<]>+.<<+++[->++[->+++<]<]>>.  
CODE;  
  
$bf = new BrainFuck($code);  
$bf->Run();  
  
class BrainFuck {  
  private $code = null;  
  private $data = array();  
  private $dataPointer = 0;  
  private $codePointer = 0;  
  private $jumps = 0;  
  
  function __construct($code = null) {  
    $this->data = array();  
    $this->dataPointer = 0;  
    $this->codePointer = 0;  
    $this->jumps = 0;  
    if (!is_null($code))  
      $this->code = $code;  
  } //BrainFuck::__construct  
  
  private function Data($value = 0) {  
    if (!isset($this->data[$this->dataPointer]))  
      $this->data[$this->dataPointer] = 0;  
    if ($value > 0)  
      $this->data[$this->dataPointer]++;  
    if ($value < 0)  
      $this->data[$this->dataPointer]--;  
    if ($value == 0)  
      return $this->data[$this->dataPointer];  
  } //BrainFuck::Data  
  
  private function jumpAhead() {  
    $jumps = $this->jumps++;  
    while (++$this->codePointer < strlen($this->code)) {  
      switch ($this->code{$this->codePointer}) {  
        case '[': $this->jumps++; break;  
        case ']': if (--$this->jumps == $jumps) return;  
      } //switch  
    } //while  
    die('Error: unexpected end of code');  
  } //BrainFuck::jumpAhead  
  
  private function jumpBack() {  
    $jumps = $this->jumps--;  
    while (--$this->codePointer > 0) {  
      switch ($this->code{$this->codePointer}) {  
        case ']': $this->jumps--; break;  
        case '[': if (++$this->jumps == $jumps) return;  
      } //switch  
    } //while  
    die('Error: begin of code exceeded');  
  } //BrainFuck::jumpBack  
  
  function Run() {  
    $this->__construct(); // reset values if called more than once  
  
    if (!strlen($this->code))  
      die('Error: no code');  
  
    do {  
      switch ($this->code{$this->codePointer}) {  
        case '>': $this->dataPointer++; break;  
        case '<': $this->dataPointer--; break;  
        case '+': $this->Data(1); break;  
        case '-': $this->Data(-1); break;  
        case '.': echo chr($this->Data()); break;  
        case ',': break; // not implemented  
        case '[': (!$this->Data()) ? $this->jumpAhead() : $this->jump++; break;  
        case ']': ($this->Data()) ? $this->jumpBack() : $this->jump--; break;  
      } //switch  
    } while (++$this->codePointer < strlen($this->code));  
  } //BrainFuck::Run  
} //BrainFuck  
?>  

echo "$verabschiedung $name";