Wordpress Search - php

Question

is there a way to just search
pages
Custom Types
Posts
I am currently modifying the twenty eleven theme.
here is the Code for search.php:
<?php if ( have_posts() ) : ?>
<header class="page-header">
<h1 class="page-title"><?php printf( __( 'Search Results for "%s"', 'twentyeleven' ), '<span>' . get_search_query() . '</span>' ); ?></h1>
<div class="SearchCount"><?php /* Search Count */
$allsearch = &new WP_Query("s=$s&showposts=-1");
//$key = wp_specialchars($s, 1);
$count = $allsearch->post_count; _e(''); _e();
echo $key; _e(); _e();
echo $count . ' '; _e('');
wp_reset_query(); ?> Saved Results </div>
<div id="topPagination"><?php twentyeleven_child_content_nav( 'nav-above' ); ?></div>
</header>
<?php /* Start the Loop */ ?>
<?php while ( have_posts() ) : the_post(); ?>
<?php
/* Include the Post-Format-specific template for the content.
* If you want to overload this in a child theme then include a file
* called content-___.php (where ___ is the Post Format name) and that will be used instead.
*/
get_template_part( 'content', 'search' );
?>
<?php endwhile; ?>
<?php twentyeleven_child_content_nav( 'nav-below' ); ?>
<?php else : ?>
<article id="post-0" class="post no-results not-found">
<header class="entry-header">
<h1 class="entry-title"><?php _e( 'Nothing Found', 'twentyeleven' ); ?></h1>
</header><!-- .entry-header -->
<div class="entry-content">
<p><?php _e( 'Sorry, but nothing matched your search criteria. Please try again with some different keywords.', 'twentyeleven' ); ?></p>
<?php get_search_form(); ?>
</div><!-- .entry-content -->
</article><!-- #post-0 -->
<?php endif; ?>
And here is the content-search.php
<h2><a href="<?php the_permalink();?>">
<?php $title = get_the_title(); $keys= explode(" ",$s); $title = preg_replace('/('.implode('|', $keys) .')/iu', '<strong class="search-excerpt">\0</strong>', $title); ?>
<?php echo $title; ?>
</a><br />
<span class="categoryClass"><?php the_category(','); ?></span></h2>
<?php the_excerpt(); ?>
<?php wp_link_pages( array( 'before' => '<div class="page-link"><span>' . __( 'Pages:', 'twentyeleven' ) . '</span>', 'after' => '</div>' ) ); ?>
</div><!-- .entry-content -->
Thank you

Answer 1

The way I see it you have two options. One is to modify wp_query to only return the type that you want. The second is search on everything, but filter the results afterwards.
This is how I believe you would modify wp_query by using Type Parameters
$allsearch = &new WP_Query("s=$s&showposts=-1"); //what you currently have
$customsearch = &new WP_Query("post_type=page&posts_per_page =5");
This is how I believe you would filter post search
if ( have_posts() ) : while ( have_posts() ) : the_post();
if (is_page()) {} //do something if page
endwhile;

Answer 2

http://codex.wordpress.org/Creating_a_Search_Page