index.php

<?php

  require_once( "config.inc.php" );
  require_once( INCLUDE_DIR."/functions.inc.php" );
  require_once( INCLUDE_DIR."/html.inc.php" );

  if ( is_readable(INCLUDE_DIR.'/'.DB_TYPE.'.inc.php') ) {
    require_once( INCLUDE_DIR.'/'.DB_TYPE.'.inc.php' );
  } else {
    require_once( INCLUDE_DIR."/mysql.inc.php" );
  }

  if ( isset($_GET['admin']) ) {
    require_once( INCLUDE_DIR."/sessions.inc.php" );
    if ( !isset($_SESSION['USER']) ) {
      require( INCLUDE_DIR."/login.php" );
      exit;
    }
    if ( !isset($_GET['m']) ) $_GET['m'] = "domains";
    $file2include = INCLUDE_DIR."/".preg_replace('/[^a-z]*/','',$_GET['m']).".php";
    $file2include = is_readable($file2include) ? $file2include : INCLUDE_DIR.'/domains.php';
    require( $file2include );
  } else {
    require( INCLUDE_DIR."/main.php" );
  }