Ultimate WordPress Functions.php Examples And Tutorials

// REMOVE THE WORDPRESS UPDATE NOTIFICATION FOR ALL USERS EXCEPT ADMIN
   global $user_login;
   get_currentuserinfo();
   if ($user_login !== "admin") { // change admin to the username that gets the updates
    add_action( 'init', create_function( '$a', "remove_action( 'init', 'wp_version_check' );" ), 2 );
    add_filter( 'pre_option_update_core', create_function( '$a', "return null;" ) );
   }

// remove junk from head
remove_action('wp_head', 'rsd_link');
remove_action('wp_head', 'wp_generator');
remove_action('wp_head', 'feed_links', 2);
remove_action('wp_head', 'index_rel_link');
remove_action('wp_head', 'wlwmanifest_link');
remove_action('wp_head', 'feed_links_extra', 3);
remove_action('wp_head', 'start_post_rel_link', 10, 0);
remove_action('wp_head', 'parent_post_rel_link', 10, 0);
remove_action('wp_head', 'adjacent_posts_rel_link', 10, 0);

// no more jumping for read more link
function no_more_jumping($post) {
	return '<a class="read-more" href="'.get_permalink($post-&gt;ID).'">'.'Continue Reading'.'</a>';
}
add_filter('excerpt_more', 'no_more_jumping');

// Allow constributors to upload files
if ( current_user_can('contributor') && !current_user_can('upload_files') )
    add_action('admin_init', 'allow_contributor_uploads');
 
function allow_contributor_uploads() {
    $contributor = get_role('contributor');
    $contributor->add_cap('upload_files');

// enable threaded comments
function enable_threaded_comments(){
	if (!is_admin()) {
		if (is_singular() AND comments_open() AND (get_option('thread_comments') == 1))
			wp_enqueue_script('comment-reply');
		}
}
add_action('get_header', 'enable_threaded_comments');

function custom_admin_footer() {
	echo 'Gotta love <a href="http://wpshout.com">WPShout</a>';
}
add_filter('admin_footer_text', 'custom_admin_footer');

// MAKE CUSTOM POST TYPES SEARCHABLE
function searchAll( $query ) {
 if ( $query->is_search ) { $query->set( 'post_type', array( 'site','plugin', 'theme','person' )); }
 return $query;
}
add_filter( 'the_search_query', 'searchAll' );

//Remove plugin update for inactive plugins
 
function update_active_plugins($value = '') {
    /*
    The $value array passed in contains the list of plugins with time
    marks when the last time the groups was checked for version match
    The $value->reponse node contains an array of the items that are
    out of date. This response node is use by the 'Plugins' menu
    for example to indicate there are updates. Also on the actual
    plugins listing to provide the yellow box below a given plugin
    to indicate action is needed by the user.
    */
    if ((isset($value->response)) && (count($value->response))) {
 
        // Get the list cut current active plugins
        $active_plugins = get_option('active_plugins');
        if ($active_plugins) {
 
            //  Here we start to compare the $value->response
            //  items checking each against the active plugins list.
            foreach($value->response as $plugin_idx => $plugin_item) {
 
                // If the response item is not an active plugin then remove it.
                // This will prevent WordPress from indicating the plugin needs update actions.
                if (!in_array($plugin_idx, $active_plugins))
                    unset($value->response[$plugin_idx]);
            }
        }
        else {
             // If no active plugins then ignore the inactive out of date ones.
            foreach($value->response as $plugin_idx => $plugin_item) {
                unset($value->response);
            }
        }
    }
    return $value;
}
add_filter('transient_update_plugins', 'update_active_plugins');    // Hook for 2.8.+
//add_filter( 'option_update_plugins', 'update_active_plugins');    // Hook for 2.7.x

//remove pings to self
function no_self_ping( &$links ) {
    $home = get_option( 'home' );
    foreach ( $links as $l => $link )
        if ( 0 === strpos( $link, $home ) )
            unset($links[$l]);
}
add_action( 'pre_ping', 'no_self_ping' );

// shortcode in widgets
if ( !is_admin() ){
    add_filter('widget_text', 'do_shortcode', 11);
}