大名鼎鼎的WordPress我就不做过多介绍了，但是由于是国外的程序，毕竟使用习惯和网络环境不同，需要做一些优化，下面列出一些常用的代码，使用时将代码复制进主题的functions.php文件中即可。

//禁用谷歌字体
function coolwp_remove_open_sans_from_wp_core() {
    wp_deregister_style( 'open-sans' );
    wp_register_style( 'open-sans', false );
    wp_enqueue_style('open-sans','');
}
add_action( 'init', 'coolwp_remove_open_sans_from_wp_core' );

//禁用Wordpress小工具
add_action( 'widgets_init', 'my_unregister_widgets' );   
function my_unregister_widgets() {   
    unregister_widget( 'WP_Widget_Archives' );   
    unregister_widget( 'WP_Widget_Calendar' );   
//    unregister_widget( 'WP_Widget_Categories' );   
    unregister_widget( 'WP_Widget_Links' );   
    unregister_widget( 'WP_Widget_Meta' );   
    unregister_widget( 'WP_Widget_Pages' );   
    unregister_widget( 'WP_Widget_Recent_Comments' );   
//    unregister_widget( 'WP_Widget_Recent_Posts' );   
    unregister_widget( 'WP_Widget_RSS' );   
    unregister_widget( 'WP_Widget_Search' );   
    unregister_widget( 'WP_Widget_Tag_Cloud' );   
    unregister_widget( 'WP_Widget_Text' );   
    unregister_widget( 'WP_Nav_Menu_Widget' );   
}  

//屏蔽后台仪表盘无用模块
function example_remove_dashboard_widgets() {
    // Globalize the metaboxes array, this holds all the widgets for wp-admin
    global $wp_meta_boxes;
    // 以下这一行代码将删除 "快速发布" 模块
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_quick_press']);
    // 以下这一行代码将删除 "引入链接" 模块
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_incoming_links']);
    // 以下这一行代码将删除 "插件" 模块
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins']);
    // 以下这一行代码将删除 "近期评论" 模块
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_comments']);
    // 以下这一行代码将删除 "近期草稿" 模块
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_recent_drafts']);
    // 以下这一行代码将删除 "WordPress 开发日志" 模块
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']);
    // 以下这一行代码将删除 "其它 WordPress 新闻" 模块
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary']);
    // 以下这一行代码将删除 "概况" 模块
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_right_now']);
}
add_action('wp_dashboard_setup', 'example_remove_dashboard_widgets' );

//屏蔽左上logo
function annointed_admin_bar_remove() {
        global $wp_admin_bar;
        /* Remove their stuff */
        $wp_admin_bar->remove_menu('wp-logo');
}
add_action('wp_before_admin_bar_render', 'annointed_admin_bar_remove', 0);

//屏蔽后台选项和帮助选项卡
function remove_screen_options(){ return false;}
    add_filter('screen_options_show_screen', 'remove_screen_options');
    add_filter( 'contextual_help', 'wpse50723_remove_help', 999, 3 );
    function wpse50723_remove_help($old_help, $screen_id, $screen){
    $screen->remove_help_tabs();
    return $old_help;
}

// 禁用修订版本
add_filter( 'wp_revisions_to_keep', 'specs_wp_revisions_to_keep', 10, 2 );
function specs_wp_revisions_to_keep( $num, $post ) {
    return 0;
}

// 禁用自动保存，所以编辑长文章前请注意手动保存。
add_action('wp_print_scripts','disable_autosave');
function disable_autosave(){  
    wp_deregister_script('autosave'); 
}

//禁用更新
add_filter('pre_site_transient_update_core',    create_function('$a', "return null;")); // 关闭核心提示
add_filter('pre_site_transient_update_plugins', create_function('$a', "return null;")); // 关闭插件提示
add_filter('pre_site_transient_update_themes',  create_function('$a', "return null;")); // 关闭主题提示
remove_action('admin_init', '_maybe_update_plugins'); // 禁止 WordPress 更新插件
remove_action('admin_init', '_maybe_update_core');    // 禁止 WordPress 检查更新
remove_action('admin_init', '_maybe_update_themes');  // 禁止 WordPress 更新主题

//静止wp_head函数输入博客标题
remove_action( 'wp_head', '_wp_render_title_tag', 1 );

// 禁止pre标签代码被浏览器解释
function wch_stripslashes($code){
    $code=str_replace('\\"', '"',$code);
    $code=htmlspecialchars($code,ENT_QUOTES);
    return $code;
}
function wp_pre_tag_filter($content) {
    return preg_replace("/<pre(.*?)>(.*?)<\/pre>/ise",
        "'<pre>'.wch_stripslashes('$2').'</pre>'", $content);
}
add_filter('the_content', 'wp_pre_tag_filter', 2);
add_filter('comment_text', 'wp_pre_tag_filter', 2);

function wp_code_tag_filter($content) {
    return preg_replace("/<code(.*?)>(.*?)<\/code>/ise",
        "'<code>'.wch_stripslashes('$2').'</code>'", $content);
}
add_filter('the_content', 'wp_code_tag_filter', 2);
add_filter('comment_text', 'wp_code_tag_filter', 2);

//禁止代码标点转换
//取消内容转义
remove_filter('the_content', 'wptexturize');
//取消摘要转义
remove_filter('the_excerpt', 'wptexturize');
//取消评论转义
remove_filter('comment_text', 'wptexturize');

// 设置阅读全文文字
add_filter( 'the_content_more_link', 'lingonberry_custom_more_link', 10, 2 );

function lingonberry_custom_more_link( $more_link, $more_link_text ) {
    return str_replace( $more_link_text, __('阅读全文>>', ''), $more_link );
}

// 设置阅读全文跳转到页顶
add_filter('the_content_more_link', 'remove_more_jump_link'); 

function remove_more_jump_link($link) { 
    return preg_replace('/#more-\d+/i','',$link); 
}

//添加友情链接
add_filter( 'pre_option_link_manager_enabled', '__return_true' );

//添加HTML编辑器自定义快捷标签按钮
add_action('after_wp_tiny_mce', 'add_button_mce');
function add_button_mce($mce_settings) {
?>
<script type="text/javascript">
    edButtons[121]=new QTags.TagButton('pre', 'pre', "<pre>\n", "\n</pre>" );
</script>
<?php
}

//设置gravatar头像源为七牛
function qiniu_avatar($avatar) {
    $avatar = str_replace(array("www.gravatar.com","0.gravatar.com","1.gravatar.com","2.gravatar.com"),"gravatar.moobei.com",$avatar);
    return $avatar;
}
add_filter( 'get_avatar', 'qiniu_avatar', 10, 3 );

// 添加编辑器样式表
function lingonberry_add_editor_styles() {
    add_editor_style( 'lingonberry-editor-styles.css' );
}
add_action( 'init', 'lingonberry_add_editor_styles' );

// 添加主题侧边栏插件，下面的php文件只是范例，需要有相应主题文件支持
require_once (get_template_directory() . "/widgets/dribbble-widget.php");  
require_once (get_template_directory() . "/widgets/about_me_widget.php");  
require_once (get_template_directory() . "/widgets/video-widget.php");

// 评论表情替换
add_filter('smilies_src','custom_smilies_src',1,10);
function custom_smilies_src ($img_src, $img, $siteurl){
    return get_bloginfo('template_directory').'/images/smilies/'.$img;
}

// 禁用emoji表情
function disable_emojis() {
    remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
    remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
    remove_action( 'wp_print_styles', 'print_emoji_styles' );
    remove_action( 'admin_print_styles', 'print_emoji_styles' );    
    remove_filter( 'the_content_feed', 'wp_staticize_emoji' );
    remove_filter( 'comment_text_rss', 'wp_staticize_emoji' );  
    remove_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
    add_filter( 'tiny_mce_plugins', 'disable_emojis_tinymce' );
}
add_action( 'init', 'disable_emojis' );
/**
 * Filter function used to remove the tinymce emoji plugin.
 * 
 * @param    array  $plugins  
 * @return   array             Difference betwen the two arrays
 */
function disable_emojis_tinymce( $plugins ) {
    return array_diff( $plugins, array( 'wpemoji' ) );
}
function smilies_reset() {
global $wpsmiliestrans, $wp_smiliessearch;

// don't bother setting up smilies if they are disabled
if ( !get_option( 'use_smilies' ) )
    return;

    $wpsmiliestrans = array(
    ':mrgreen:' => 'icon_mrgreen.gif',
    ':neutral:' => 'icon_neutral.gif',
    ':twisted:' => 'icon_twisted.gif',
      ':arrow:' => 'icon_arrow.gif',
      ':shock:' => 'icon_eek.gif',
      ':smile:' => 'icon_smile.gif',
        ':???:' => 'icon_confused.gif',
       ':cool:' => 'icon_cool.gif',
       ':evil:' => 'icon_evil.gif',
       ':grin:' => 'icon_biggrin.gif',
       ':idea:' => 'icon_idea.gif',
       ':oops:' => 'icon_redface.gif',
       ':razz:' => 'icon_razz.gif',
       ':roll:' => 'icon_rolleyes.gif',
       ':wink:' => 'icon_wink.gif',
        ':cry:' => 'icon_cry.gif',
        ':eek:' => 'icon_surprised.gif',
        ':lol:' => 'icon_lol.gif',
        ':mad:' => 'icon_mad.gif',
        ':sad:' => 'icon_sad.gif',
          '8-)' => 'icon_cool.gif',
          '8-O' => 'icon_eek.gif',
          ':-(' => 'icon_sad.gif',
          ':-)' => 'icon_smile.gif',
          ':-?' => 'icon_confused.gif',
          ':-D' => 'icon_biggrin.gif',
          ':-P' => 'icon_razz.gif',
          ':-o' => 'icon_surprised.gif',
          ':-x' => 'icon_mad.gif',
          ':-|' => 'icon_neutral.gif',
          ';-)' => 'icon_wink.gif',
    // This one transformation breaks regular text with frequency.
    //     '8)' => 'icon_cool.gif',
           '8O' => 'icon_eek.gif',
           ':(' => 'icon_sad.gif',
           ':)' => 'icon_smile.gif',
           ':?' => 'icon_confused.gif',
           ':D' => 'icon_biggrin.gif',
           ':P' => 'icon_razz.gif',
           ':o' => 'icon_surprised.gif',
           ':x' => 'icon_mad.gif',
           ':|' => 'icon_neutral.gif',
           ';)' => 'icon_wink.gif',
          ':!:' => 'icon_exclaim.gif',
          ':?:' => 'icon_question.gif',
    );
}
smilies_reset();

//自定义后台登录样式
function custom_login() {
    echo '<link rel="stylesheet" type="text/css" href="' . get_bloginfo( 'template_directory' ) . '/admin.css" />';
}
add_action('login_head', 'custom_login');

//更改后台logo的url
function custom_headerurl( $url ) {
    return get_bloginfo( 'url' );
}
add_filter( 'login_headerurl', 'custom_headerurl' );

//更改后台logo url的title
function custom_headertitle( $title ) {
    return get_bloginfo( 'name' );
}
add_filter('login_headertitle','custom_headertitle');