<?php
// This class only works with Apache webserver and .htaccess errorpages enabled!


class rewriter {
// The first field of the array is not needed, the others are the parm given by the url seperated by '/'
// i.e. http://localhost/rewriter/page1.html is pared to
/*
Array
(
    [] => 
    [var1] => rewriter
    [var2] => first
)
*/
 var $varnames = array("","var1","var2");
 var $vars = array();

 function rewriter($config=0) {
  if(is_array($config)) $this->varnames = $config;
 }

// This function parse the given string or $REQUEST_URI to the array as above.
// If $merge is true the result will be merged into $_REQUEST superglobal array!
 function decode($str="",$merge=false) {
  if(strlen($str) == 0) $str = $REQUEST_URI;
  $values=explode("/",$str);
  $this->vars=array_flip($this->varnames);
  $i=0;
  foreach($values as $value) {
    $ptn=explode(".",$value);
    $this->vars[$this->varnames[$i]] = $ptn[0];
    $i++;
  }
 if($merge) {array_merge($_REQUEST, $this->vars);}
 else return $this->vars;
 }
// This function encodes the given array to an URI that can be decoded with the decode function.
// Each field of $arr is a seperate 'folder',
// $last is the 'filetype',
// $base is the real folder where the controler script is available to the web
 function encode($arr,$last="",$base="") {
  if(strlen($base) != 0 )$str=$base."/";
  foreach($arr as $value) {
    $i++;
    $str.=$value;
    if($i != count($arr)) $str.="/";
    else $str.=$last;
  }
 return $str;
 }

// Telling the Browser that everything is ok.... ;)
 function ok() {
  @header("HTTP/1.1 200 OK");
  @header("Status: 200 OK", TRUE);
 }

}
?>