<?php
$search=htmlspecialchars($_GET['load']);
$method = isset( $_GET['btnAction'] ) ? $_GET['btnAction'] : '';

switch( $method ) {
    case 'Search':
      header('Location: search.php?load=$search');
        break;
    case 'Im Feeling Lucky':
        //do chapter two stuff
      header('Location: search_lucky.php?load=$search');
        break;
    default:
        echo 'Not a valid operation';
}

?>

<?php
    $search=htmlspecialchars($_GET['load']);
    if(isset($_GET['btnAction']) {
    $method = $_GET['btnAction'];
    }

    switch( $method ) {
        case 'Search':
          header('Location: search.php?load=$search');
            break;
        case 'Im Feeling Lucky':
            //do chapter two stuff
          header('Location: search_lucky.php?load=$search');
            break;
        default:
            echo 'Not a valid operation';
    }

    ?>

<?php
$search=htmlspecialchars($_GET['load']);
$method = isset( $_GET['btnAction'] ) ? $_GET['btnAction'] : '';
switch( $method ) {
  case "search":
    header("Location: search.php?load=$search");
    break;
  case "Im Feeling Lucky":
    //do chapter two stuff
    header("Location: search_lucky.php?load=$search");
    break;
  default:
    echo 'Not a valid operation';
}
?>

header("Location: search.php?load=$search");

header('Location: search.php?load='.$search);