wordpress博客主题制作技巧：模板函数妙用

<?php // custom functions.php template @ digwp.com

// add feed links to header
if (function_exists('automatic_feed_links')) {
automatic_feed_links();
} else {
return;
}

// smart jquery inclusion
if (!is_admin()) {
wp_deregister_script('jquery');
wp_register_script('jquery',

("http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"), false, '1.3.2');
wp_enqueue_script('jquery');
}

// 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');

// 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);

// add google analytics to footer
function add_google_analytics() {
echo '<script

src="http://www.google-analytics.com/ga.js" type="text/javascript"></script>';
echo '<script type="text/javascript">';
echo 'var pageTracker = _gat._getTracker("UA-XXXXX-X");';
echo 'pageTracker._trackPageview();';
echo '</script>';
}
add_action('wp_footer', 'add_google_analytics');

// custom excerpt length
function custom_excerpt_length($length) {
return 20;
}
add_filter('excerpt_length', 'custom_excerpt_length');

// custom excerpt ellipses for 2.9+
function custom_excerpt_more($more) {
return '...';
}
add_filter('excerpt_more', 'custom_excerpt_more');

/* custom excerpt ellipses for 2.8-
function custom_excerpt_more($excerpt) {
return str_replace('[...]', '...', $excerpt);
}
add_filter('wp_trim_excerpt', 'custom_excerpt_more');
*/

// no more jumping for read more link
function no_more_jumping($post) {
return '<a href="'.get_permalink($post->ID).'

" class="read-more">'.'Continue Reading'.'</a>';
}
add_filter('excerpt_more', 'no_more_jumping');

// add a favicon to your
function blog_favicon() {
echo '<link rel="Shortcut Icon" type="image/x-icon"

href="'.get_bloginfo('wpurl').'/favicon.ico" />';
}
add_action('wp_head', 'blog_favicon');

// add a favicon for your admin
function admin_favicon() {
echo '<link rel="Shortcut Icon" type="image/x-icon"

href="'.get_bloginfo('stylesheet_directory').'/images/favicon.png" />';
}
add_action('admin_head', 'admin_favicon');

// custom admin login logo
function custom_login_logo() {
echo '<style type="text/css">
h1 a { background-image:

url('.get_bloginfo('template_directory').'/images/custom-login-logo.png) !important; }
</style>';
}
add_action('login_head', 'custom_login_logo');

// disable all widget areas
function disable_all_widgets($sidebars_widgets) {
//if (is_home())
$sidebars_widgets = array(false);
return $sidebars_widgets;
}
add_filter('sidebars_widgets', 'disable_all_widgets');

// kill the admin nag
if (!current_user_can('edit_users')) {
add_action('init', create_function('$a',

"remove_action('init', 'wp_version_check');"), 2);
add_filter('pre_option_update_core', create_function('$a', "return null;"));
}

// category id in body and post class
function category_id_class($classes) {
global $post;
foreach((get_the_category($post->ID)) as $category)
$classes [] = 'cat-' . $category->cat_ID . '-id';
return $classes;
}
add_filter('post_class', 'category_id_class');
add_filter('body_class', 'category_id_class');

// get the first category id
function get_first_category_ID() {
$category = get_the_category();
return $category[0]->cat_ID;
}

?>