Mini Shell

<?php

class Request {

  // Request URI get/post params (param1=controller, param2=action, param3 (opt) = id)
  // URI parameters are in the form "?controller=param1?action=param2&id=param3"
  // These are rewritten by server rewrite engine from http://host/controller/action/id
  // POST params from forms are merged in the same parameter array by router
  
  private $parameters;

  public function __construct($parameters) {
    $this->parameters = $parameters;
  }

  // Test if param name is in request
  public function existParameter($name) {
    return (isset($this->parameters[$name]) && $this->parameters[$name] != "");
  }

  // Return param value from request
  // Raise exception if param not found
  public function getParameter($name) {
    if ($this->existParameter($name)) {
      return $this->parameters[$name];
    }
    else
	  return null;
      //throw new ErrorException("Paramètre '$name' absent de la requête",0,E_USER_ERROR);
  }

  // Return all param values from request
  public function getParameters() {
    return $this->parameters;
  }
  
  // Unset particular param element
  public function unsetParameter($name) {
	   if($this->existParameter($name)) unset($this->parameters[$name]);
  } 
}