Update all Directory Listings posts

// Update all post

function update_all_posts() {
$args = array(
‘post_type’ => ‘w2dc_listing’,
‘numberposts’ => -1
);
$all_posts = get_posts($args);
foreach ($all_posts as $single_post){
$single_post->post_title = $single_post->post_title.”;
wp_update_post( $single_post );
}
}
add_action( ‘wp_loaded’, ‘update_all_posts’ );