foreach statement echo once if nested foreach is empty? - php

Question

OK I have a foreach statement searching for a keyword across 3 multisite blogs in wordpress like so:
<?php
foreach ( $blogs as $blog ):
switch_to_blog($blog['blog_id']);
$search = new WP_Query($query_string);
if ($search->found_posts>0) {
foreach ( $search->posts as $post ) {
echo "POST CONTEN";
}
}elseif ($search->found_posts===0) {
# code...
$notfound = true;
}
endforeach;
if ($notfound) {
# code...
echo "POST NOT FOUND";
}
This works fine if there are no posts using the keyword across all thre blogs it echos the POST NOT FOUND but if there is a post on blog 1 but not on blog 2 or 3 it still echos POST NOT FOUND why?
Chris
//********UPDATE***********************************/
<?php
$searchfor = get_search_query(); // Get the search query for display in a headline
$query_string=esc_attr($query_string); // Escaping search queries to eliminate potential MySQL-injections
$blogs = get_blog_list( 0,'all' );
$notfound = true;
foreach ( $blogs as $blog ):
switch_to_blog($blog['blog_id']);
$search = new WP_Query($query_string);
if ($search->found_posts>0) {
$notfound = false;
}
if($notfound){
?>
<div class="post">
<h2><?php _e('Ingen resultater'); ?></h2>
<p><?php _e('Beklager, vi fant ingen innlegg som samsvarer med ditt søk: ' . get_search_query()); ?></p>
</div>
<?php
}else{
foreach ( $search->posts as $post ) {
echo "content";
}
}
endforeach;
?>

Answer 1

Your logic is backwards. You should start with a "nothing found" condition, and change it to false when something is found:
$not_found = true;
while ...
if ($search->found_posts != 0) {
$not_found = false;
}
}
if ($not_found) {
echo 'nothing found'; // $not_found is true
} else {
echo 'found something'; // $not_found is false
}

Answer 2

Sorry about the formatting. Just copied your code here. Do the opposite of what your doing, look at the variable $found here.
<?php
$found = false;
foreach ( $blogs as $blog ):
switch_to_blog($blog['blog_id']);
$search = new WP_Query($query_string);
if ($search->found_posts>0) {
foreach ( $search->posts as $post ) {
echo "POST CONTEN";
}
$found = true;
}elseif ($search->found_posts===0) {
# code...
}
endforeach;
if ($found == false) {
# code...
echo "POST NOT FOUND";
}