"index php?p=home"; probleem

 <?php
      $standaard = 0; // Welk menu moet standaard open staan?
      $menu = array(); // Array starten       
 
      //Menu 0

      $menu[0][] = "MENU 1";
      $menu[0]['Home'] = "index.php?p=home";
      $menu[0]['Archief'] = "index.php?p=archief";
      $menu[0]['Test'] = "index.php?p=test";
      $menu[0]['LaLaLa'] = "index.php?p=lalala";
       

      //Menu 1

      $menu[1][] = "MENU 2";
      $menu[1]['Home'] = "index.php?p=home";
      $menu[1]['Archief'] = "index.php?p=archief";
      $menu[1]['Test'] = "index.php?p=test";
      $menu[1]['LaLaLa'] = "index.php?p=lalala";
       

      if (!isset($_GET['menuid']))
      {

      $_GET['menuid'] = $standaard;
      }

       

      for ($i=0; $i<count($menu); $i++)
      {

      if ($i == $_GET['menuid']) // Links tonen + menu ZONDER link
      {
      echo "<b>".$menu[$i][0]."</b><br>"; 

      array_shift($menu[$i]); // Schuif een element van het begin van de array af
    

      foreach($menu[$i] as $key => $value) // Key en waarde
      {
      echo "<a href=\"".$value."\">".$key."</a><br>";
      }

      }

      else // Geen links tonen + menu MET link
      {
      echo "<b><a href=\"?menuid=".$i."\">".$menu[$i][0]."</a></b><br>";  
      }       

      echo "<br>";
      }
      ?>

<?php
      $standaard = 0; // Welk menu moet standaard open staan?
      $menu = array(); // Array starten       
 
      //Menu 0
 
      $menu[0][] = "MENU 1";
      $menu[0]['Home'] = "index.php?p=home";
      $menu[0]['Archief'] = "index.php?p=archief";
      $menu[0]['Test'] = "index.php?p=test";
      $menu[0]['LaLaLa'] = "index.php?p=lalala";
 
 
      //Menu 1
 
      $menu[1][] = "MENU 2";
      $menu[1]['Home'] = "index.php?p=home";
      $menu[1]['Archief'] = "index.php?p=archief";
      $menu[1]['Test'] = "index.php?p=test";
      $menu[1]['LaLaLa'] = "index.php?p=lalala";
 
 
      if (!isset($_GET['menuid']))
      {
 
      $_GET['menuid'] = $standaard;
      }
 
 
 
      for ($i=0; $i<count($menu); $i++)
      {
 
      if ($i == $_GET['menuid']) // Links tonen + menu ZONDER link
      {
      echo "<b>".$menu[$i][0]."</b><br>"; 
 
      array_shift($menu[$i]); // Schuif een element van het begin van de array af
 
 
      foreach($menu[$i] as $key => $value) // Key en waarde
      {
      echo "<a href=\"".$value."\">".$key."</a><br>";
      }
 
      }
 
      else // Geen links tonen + menu MET link
      {
      echo "<b><a href=\"?menuid=".$i."\">".$menu[$i][0]."</a></b><br>";  
      }       
 
      echo "<br>";
      }
      ?>