WordPress 建站主题开发常用功能函数

PetitQ WordPress教程 2021-12-11 1.13K 0 0

```
<?php
```

//通过这段代码，对语言包进行翻译，需要将语言包的代码添加到调用主题选项代码的前面

//load_theme_textdomain('ankium', get_template_directory() . '/languages');

```
/*
```

 * 移除Wordpress后台顶部左上角的W图标

```
 */
```

add_action('wp_before_admin_bar_render', 'annointed_admin_bar_remove', 0);

```
function annointed_admin_bar_remove() {
```
```
    global $wp_admin_bar;
```
```
    /* Remove their stuff */
```

    $wp_admin_bar->remove_menu('wp-logo');

```
}
```
```
 
```
```
 
```
```
/*
```
```
 * 自定义后台登录Logo的Url
```
```
 */
```

add_filter( 'login_headerurl', 'custom_loginlogo_url' );

```
function custom_loginlogo_url($url) {
```
```
    return 'http://www.ankium.com';
```
```
}
```
```
 
```
```
 
```
```
/*
```

 * 自定义 WordPress 后台底部的版权和版本信息

```
 */
```

add_filter('admin_footer_text', 'left_admin_footer_text');

function left_admin_footer_text($text) {

```
    // 左边信息
```

    $text = '大道行思，开拓创新；大道至简，务实为要';

```
    return $text;
```
```
}
```

add_filter('update_footer', 'right_admin_footer_text', 11);

function right_admin_footer_text($text) {

```
    // 右边信息
```

    $text = "延安安琪云信息科技有限公司";

```
    return $text;
```
```
}
```
```
 
```
```
 
```
```
/*
```

 * 屏蔽 WP 后台“显示选项”和“帮助”选项卡

```
 */
```

//add_filter('screen_options_show_screen', 'remove_screen_options');

//add_filter( 'contextual_help', 'remove_wp_help', 999, 3 );

function remove_screen_options(){ return false;}

function remove_wp_help($old_help, $screen_id, $screen){

```
    $screen->remove_help_tabs();
```
```
    return $old_help;
```
```
}
```
```
 
```
```
/*
```
```
 * 固定后台管理侧边栏
```
```
 */
```

add_action('admin_head', 'Bing_fixed_adminmenuwrap');

```
function Bing_fixed_adminmenuwrap(){
```

    echo '<style type="text/css">#adminmenuwrap{position:fixed;left:0px;z-index:2;}</style>';

```
};
```
```
 
```
```
 
```
```
/*
```
```
 * 阻止站内文章互相Pingback
```
```
 */
```

add_action('pre_ping','Bing_noself_ping');

```
function Bing_noself_ping($links) {
```
```
    $home = get_option( 'home' );
```
```
    foreach ( $links as $l => $link )
```

        if ( 0 === strpos( $link, $home ) )

```
            unset($links[$l]);
```
```
}
```
```
 
```
```
/*
```

 * 增强默认编辑器（mce_buttons:工具栏的第一行；mce_buttons_2:工具栏第二行；mce_buttons_3:工具栏第三行）

```
 */
```

add_filter("mce_buttons", "Bing_editor_buttons");

```
function Bing_editor_buttons($buttons){
```
```
 
```

    //$buttons[] = 'wp_adv';        //隐藏按钮显示开关

    $buttons[] = 'wp_adv_start';    //隐藏按钮区起始部分

    $buttons[] = 'wp_adv_end';      //隐藏按钮区结束部分

    //$buttons[] = 'bold';          //加粗

    //$buttons[] = 'italic';        //斜体

    $buttons[] = 'underline';       //下划线

    $buttons[] = 'strikethrough';   //删除线

    $buttons[] = 'justifyleft';     //左对齐

    $buttons[] = 'justifycenter';   //居中

    $buttons[] = 'justfyright';     //右对齐

    $buttons[] = 'justfyfull';      //两端对齐

    //$buttons[] = 'bullist';       //无序列表

    //$buttons[] = 'numlist';       //编号列表

    $buttons[] = 'outdent';         //减少缩进

    $buttons[] = 'indent';          //缩进

    $buttons[] = 'cut';             //剪切

    $buttons[] = 'copy';            //复制

    $buttons[] = 'paste';           //粘贴

    $buttons[] = 'undo';            //撤销

    $buttons[] = 'redo';            //重做

    //$buttons[] = 'link';          //插入超链接

    $buttons[] = 'unlink';          //取消超链接

    $buttons[] = 'image';           //插入图片

    $buttons[] = 'removeformat';    //清除格式

    $buttons[] = 'code';            //打开HTML代码编辑器

    $buttons[] = 'hr';              //水平线

    $buttons[] = 'cleanup';         //清除冗余代码

    $buttons[] = 'formmatselect';   //格式选择

    $buttons[] = 'fontselect';      //字体选择

    $buttons[] = 'fontsizeselect';  //字号选择

    $buttons[] = 'styleselect';     //样式选择

    $buttons[] = 'sub';             //上标

    $buttons[] = 'sup';             //下标

    $buttons[] = 'forecolor';       //字体颜色

    $buttons[] = 'backcolor';       //字体背景色

    $buttons[] = 'charmap';         //特殊符号

    $buttons[] = 'anchor';          //锚文本

    $buttons[] = 'newdocument';     //新建文本

    //$buttons[] = 'wp_more';       //插入more标签

    $buttons[] = 'wp_page';         //插入分页标签

    $buttons[] = 'spellchecker';    //拼写检查

    $buttons[] = 'wp_help';         //帮助

    //$buttons[] = 'selectall';       //全选

    //$buttons[] = 'visualaid';       //显示/隐藏指导线和不可见元素

    $buttons[] = 'spellchecker';    //切换拼写检查器状态

    $buttons[] = 'pastetext';       //以纯文本粘贴

    $buttons[] = 'pasteword';       //从Word中粘贴

    //$buttons[] = 'blockquote';      //引用

    $buttons[] = 'forecolorpicker'; //选择文字颜色（拾色器）

    $buttons[] = 'backcolorpicker'; //选择背景颜色（拾色器）

    $buttons[] = 'spellchecker';    //切换拼写检查器状态

```
 
```
```
    return $buttons;
```
```
}
```
```
 
```
```
/*
```

 * TinyMCE编辑器增强：增加中文字体

```
 */
```

add_filter('tiny_mce_before_init', 'custum_fontfamily');

```
function custum_fontfamily($initArray){
```

    $initArray['font_formats'] = "微软雅黑='微软雅黑';宋体='宋体';黑体='黑体';仿宋='仿宋';楷体='楷体';隶书='隶书';幼圆='幼圆';Andale Mono=andale mono,times;Arial=arial,helvetica,sans-serif;Arial Black=arial black,avant garde;Book Antiqua=book antiqua,palatino;Comic Sans MS=comic sans ms,sans-serif;Courier New=courier new,courier;Georgia=georgia,palatino;Helvetica=helvetica;Impact=impact,chicago;Symbol=symbol;Tahoma=tahoma,arial,helvetica,sans-serif;Terminal=terminal,monaco;Times New Roman=times new roman,times;Trebuchet MS=trebuchet ms,geneva;Verdana=verdana,geneva;Webdings=webdings;Wingdings=wingdings";

```
    return $initArray;
```
```
}
```
```
 
```
```
 
```
```
/*
```
```
 * 更改编辑器默认视图为HTML
```
```
 */
```

//add_filter('wp_default_editor', create_function('', 'return "html";'));

```
 
```
```
/*
```

 * 在 WordPress 编辑器中为自定义文章类型设置默认内容

```
 */
```

add_filter( 'default_content', 'my_editor_content', 10, 2 );

function my_editor_content( $content, $post ) {

```
    switch( $post->post_type ) {
```
```
        case 'sources':
```
```
            $content = 'your content';
```
```
            break;
```
```
        case 'stories':
```
```
            $content = 'your content';
```
```
            break;
```
```
        case 'pictures':
```
```
            $content = 'your content';
```
```
            break;
```
```
        default:
```

            $content = 'your default content';

```
            break;
```
```
    }
```
```
    return $content;
```
```
}
```
```
 
```
```
/*
```

 * 添加编辑器默认内容（此方法添加的内容在发布文章时自动添加在内容的最后，在编辑的时候是看不见的）

```
 */
```

add_filter ('the_content', 'insertFootNote');

```
function insertFootNote($content) {
```
```
    if(!is_feed() && !is_home()) {
```

        $content.= "这里的预定义内容在编辑器不可见";

```
    }
```
```
    return $content;
```
```
}
```
```
 
```
```
/*
```

 * 为编辑器添加更多的HTML标签

```
 */
```

add_filter('tiny_mce_before_init', 'fb_change_mce_options');

function fb_change_mce_options($initArray) {

    $ext = 'pre[id|name|class|style],iframe[align|longdesc|name|width|height|frameborder|scrolling|marginheight|marginwidth|src]';  //注意：格式为“标签一[属性一|属性二],标签二[属性一|属性二|属性三]”

    if ( isset( $initArray['extended_valid_elements'] ) ) {

        $initArray['extended_valid_elements'] .= ',' . $ext;

```
    } else {
```

        $initArray['extended_valid_elements'] = $ext;

```
    }
```
```
    return $initArray;
```
```
}
```
```
 
```
```
/*
```

 * 让编辑器支持中文拼写检查

```
 */
```

add_filter('tiny_mce_before_init', 'fb_mce_external_languages');

function fb_mce_external_languages($initArray){

    $initArray['spellchecker_languages'] = '+Chinese=zh,English=en';

```
    return $initArray;
```
```
}
```
```
 
```
```
 
```
```
/*
```
```
 * 更改后台字体
```
```
 */
```

add_action('admin_head', 'Bing_admin_lettering');

```
function Bing_admin_lettering(){
```

    //echo '<style type="text/css">*{font-family:"Microsoft YaHei" !important;}</style>';//修改字体

```
}
```
```
 
```
```
/*
```

 * WordPress 后台回复评论添加提交快捷键[Ctrl+Enter]

```
 */
```

add_action('admin_footer', 'Bing_admin_comment_ctrlenter');

function Bing_admin_comment_ctrlenter(){

    echo '<script type="text/javascript">

        jQuery(document).ready(function($){

            $("textarea").keypress(function(e){

                if(e.ctrlKey&&e.which==13||e.which==10){

                    $("#replybtn").click();

```
                }
```
```
            });
```
```
        });
```
```
    </script>';
```
```
};
```
```
 
```
```
/*
```

 * WordPress 让后台用户列表可以根据文章数进行排序

```
 */
```

if ( ! class_exists('Sort_Users_By_Post_Count') ) {

```
    class Sort_Users_By_Post_Count {
```

        function Sort_Users_By_Post_Count() {

            // Make user table sortable by post count

            add_filter( 'manage_users_sortable_columns', array( $this, 'add_custom_user_sorts' ) );

```
        }
```

        /* Add sorting by post count to user page */

        function add_custom_user_sorts( $columns ) {

            $columns['posts'] = 'post_count';

```
            return $columns;
```
```
        }
```
```
    }
```

    $Sort_Users_By_Post_Count = new Sort_Users_By_Post_Count();

```
}
```
```
 
```
```
/*
```

 * WordPress 4.3+ 默认开启页面的评论功能

```
 */
```

add_filter( 'get_default_comment_status', 'wp33516_open_comments_for_pages', 10, 3 );

function wp33516_open_comments_for_pages( $status, $post_type, $comment_type ) {

```
    if ( 'page' === $post_type ) {
```
```
        $status = 'open';
```
```
    }
```
```
    return $status;
```
```
}
```
```
 
```
```
/*
```

 * 将WordPress后台的open-sans字体加载源从Google Fonts换为360 CDN

```
 */
```

add_action( 'init', 'wpdx_replace_open_sans' );

```
function wpdx_replace_open_sans() {
```
```
    wp_deregister_style('open-sans');
```

    wp_register_style( 'open-sans', '//fonts.useso.com/css?family=Open+Sans:300italic,400italic,600italic,300,400,600' );

    if(is_admin()) wp_enqueue_style( 'open-sans');

```
}
```
```
 
```
```
/*
```

 * WordPress 关闭 XML-RPC 的 pingback 端口

```
 */
```

add_filter( 'xmlrpc_methods', 'remove_xmlrpc_pingback_ping' );

function remove_xmlrpc_pingback_ping( $methods ) {

```
    unset( $methods['pingback.ping'] );
```
```
    return $methods;
```
```
}
```
```
 
```
```
/*
```
```
 * 禁用 WordPress 的 JSON REST API
```
```
 */
```

add_filter('json_enabled', '__return_false');

add_filter('json_jsonp_enabled', '__return_false');

```
 
```
```
/*
```

 * 禁止WordPress压缩JGP图片质量

```
 */
```

add_filter( 'jpg_quality', 'high_jpg_quality' );

```
function high_jpg_quality() {
```
```
    return 100;
```
```
}
```
```
 
```
```
 
```
```
/*
```

 * WordPress 隐藏特定插件的更新提示

```
 */
```

//add_filter( 'site_transient_update_plugins', 'filter_plugin_updates' );

function filter_plugin_updates( $value ) {

    unset( $value->response['plugin-directory/plugin-file.php'] );

```
    return $value;
```
```
}
```
```
 
```
```
 
```
```
/*
```
```
 * 隐藏核心更新提示 WP 3.0+
```
```
 */
```

//add_filter( 'pre_site_transient_update_core', create_function( '$a', "return null;" ) );

```
 
```
```
/*
```
```
 * 隐藏插件更新提示 WP 3.0+
```
```
 */
```

//remove_action( 'load-update-core.php', 'wp_update_plugins' );

//add_filter( 'pre_site_transient_update_plugins', create_function( '$b', "return null;" ) );

```
 
```
```
/*
```
```
 * 隐藏主题更新提示 WP 3.0+
```
```
 */
```

//remove_action( 'load-update-core.php', 'wp_update_themes' );

//add_filter( 'pre_site_transient_update_themes', create_function( '$c', "return null;" ) );

```
 
```
```
/*
```

 * 为新用户预设默认的后台配色方案

```
 */
```

add_action('user_register', 'set_default_admin_color');

function set_default_admin_color($user_id) {

```
    $args = array(
```
```
        'ID' => $user_id,
```
```
        'admin_color' => 'sunrise'
```
```
    );
```
```
    wp_update_user( $args );
```
```
}
```
```
 
```
```
/*
```

 * 对非管理员移除配色方案设置选项

```
 */
```

if ( !current_user_can('manage_options') ){

    remove_action( 'admin_color_scheme_picker', 'admin_color_scheme_picker' );

```
}
```
```
 
```
```
/*
```

 * 移除 WordPress 仪表盘欢迎面板

```
 */
```

//remove_action('welcome_panel', 'wp_welcome_panel');

```
 
```
```
/*
```

 * 自定义 WordPress 仪表盘欢迎面板

```
 */
```

//add_action( 'welcome_panel', 'rc_my_welcome_panel' );

```
function rc_my_welcome_panel() {
```
```
    ?>
```
```
    <script type="text/javascript">
```

        /* 隐藏默认的欢迎信息 */

        jQuery(document).ready( function($)

```
        {
```

            $('div.welcome-panel-content').hide();

```
        });
```
```
    </script>
```
```
    
```

    <div class="custom-welcome-panel-content">

        <h2><?php _e( '欢迎使用WordPress！' ); ?></h2>

        <p class="about-description"><?php _e( '我们准备了几个链接供您开始：' ); ?></p>

        <div class="welcome-panel-column-container">

            <div class="welcome-panel-column">

                <h3 style="font-weight: bold"><?php _e( "开始使用" ); ?></h3>

                <a class="button button-primary button-hero load-customize hide-if-no-customize" href="http://www.ankium.com"><?php _e( '联系我们' ); ?></a>

                <p class="hide-if-no-customize"><?php printf( __( '或者 <a href="%s">设置网站</a>' ), admin_url( 'options-general.php' ) ); ?></p>

```
            </div>
```

            <div class="welcome-panel-column">

                <h4><?php _e( 'Next Steps' ); ?></h4>

```
                <ul>
```

                    <?php if ( 'page' == get_option( 'show_on_front' ) && ! get_option( 'page_for_posts' ) ) : ?>

                        <li><?php printf( '<a href="%s" class="welcome-icon welcome-edit-page">' . __( 'Edit your front page' ) . '</a>', get_edit_post_link( get_option( 'page_on_front' ) ) ); ?></li>

                        <li><?php printf( '<a href="%s" class="welcome-icon welcome-add-page">' . __( 'Add additional pages' ) . '</a>', admin_url( 'post-new.php?post_type=page' ) ); ?></li>

                    <?php elseif ( 'page' == get_option( 'show_on_front' ) ) : ?>

                        <li><?php printf( '<a href="%s" class="welcome-icon welcome-edit-page">' . __( 'Edit your front page' ) . '</a>', get_edit_post_link( get_option( 'page_on_front' ) ) ); ?></li>

                        <li><?php printf( '<a href="%s" class="welcome-icon welcome-add-page">' . __( 'Add additional pages' ) . '</a>', admin_url( 'post-new.php?post_type=page' ) ); ?></li>

                        <li><?php printf( '<a href="%s" class="welcome-icon welcome-write-blog">' . __( 'Add a blog post' ) . '</a>', admin_url( 'post-new.php' ) ); ?></li>

```
                    <?php else : ?>
```

                        <li><?php printf( '<a href="%s" class="welcome-icon welcome-write-blog">' . __( 'Write your first blog post' ) . '</a>', admin_url( 'post-new.php' ) ); ?></li>

                        <li><?php printf( '<a href="%s" class="welcome-icon welcome-add-page">' . __( 'Add an About page' ) . '</a>', admin_url( 'post-new.php?post_type=page' ) ); ?></li>

```
                    <?php endif; ?>
```

                    <li><?php printf( '<a href="%s" class="welcome-icon welcome-view-site">' . __( 'View your site' ) . '</a>', home_url( '/' ) ); ?></li>

```
                </ul>
```
```
            </div>
```

            <div class="welcome-panel-column welcome-panel-last">

                <h4><?php _e( 'More Actions' ); ?></h4>

```
                <ul>
```

                    <li><?php printf( '<div class="welcome-icon welcome-widgets-menus">' . __( 'Manage <a href="%1$s">widgets</a> or <a href="%2$s">menus</a>' ) . '</div>', admin_url( 'widgets.php' ), admin_url( 'nav-menus.php' ) ); ?></li>

                    <li><?php printf( '<a href="%s" class="welcome-icon welcome-comments">' . __( 'Turn comments on or off' ) . '</a>', admin_url( 'options-discussion.php' ) ); ?></li>

                    <li><?php printf( '<a href="%s" class="welcome-icon welcome-learn-more">' . __( 'Learn more about getting started' ) . '</a>', __( 'http://codex.wordpress.org/First_Steps_With_WordPress' ) ); ?></li>

```
                </ul>
```
```
            </div>
```
```
        </div>
```
```
        <div class="">
```

            <h3><?php _e( '关于我们' ); ?></h3>

            <!--<p class="about-description">延安安琪云信息科技有限公司</p>-->

            <p>延安安琪云信息科技有限公司成立于2017年10月23日，是陕北地区新兴的互联网综合服务提供商。公司业务涉及网络工程、软件设计、电子商务、电子政务、数据维护及品牌网站定制开发。我们的目标是成为广大客户值得信赖的互联网综合解决方案提供商！</p>

```
        </div>
```
```
    </div>
```
```
    <?php
```
```
}
```
```
 
```
```
 
```
```
/*
```

 * WordPress 限制非管理员用户上传图片的最小宽度和高度

```
 */
```

add_action( 'admin_init', 'block_authors_from_uploading_small_images' );

function block_authors_from_uploading_small_images(){

    //除管理员以外，其他用户都限制

    if( !current_user_can( 'manage_options') )

        add_filter( 'wp_handle_upload_prefilter', 'block_small_images_upload' );

```
}
```

function block_small_images_upload( $file ){

    // 检测文件的类型是否是图片

    $mimes = array( 'image/jpeg', 'image/png', 'image/gif' );

    // 如果不是图片，直接返回文件

    if( !in_array( $file['type'], $mimes ) )

```
        return $file;
```
```
 
```

    $img = getimagesize( $file['tmp_name'] );

```
    // 设置最小宽度和高度
```

    $minimum = array( 'width' => 640, 'height' => 480 );

```
 
```
```
    if ( $img[0] < $minimum['width'] )
```
```
        $file['error'] =
```

            '图片太小了，最小宽度是 '

```
            . $minimum['width']
```

            . 'px，当前上传的图片宽度是 '

```
            . $img[0] . 'px';
```
```
 
```

    elseif ( $img[1] < $minimum['height'] )

```
        $file['error'] =
```

            '图片太小了，最小高度是 '

```
            . $minimum['height']
```

            . 'px，当前上传的图片高度是 '

```
            . $img[1] . 'px';
```
```
 
```
```
    return $file;
```
```
}
```
```
 
```
```
 
```
```
/*
```

 * WordPress 后台用户列表显示注册时间

```
 */
```

add_filter( 'manage_users_columns', array('RRHE','registerdate'));

add_action( 'manage_users_custom_column',  array('RRHE','registerdate_columns'), 15, 3);

add_filter( 'manage_users_sortable_columns', array('RRHE','registerdate_column_sortable') );

add_filter( 'request', array('RRHE','registerdate_column_orderby') );

```
class RRHE {
```
```
    // Register the column - Registered
```

    public static function registerdate($columns) {

        $columns['registerdate'] = __('注册时间', 'registerdate');

```
        return $columns;
```
```
    }
```
```
 
```
```
    // Display the column content
```

    public static function registerdate_columns( $value, $column_name, $user_id ) {

        if ( 'registerdate' != $column_name )

```
            return $value;
```

        $user = get_userdata( $user_id );

        $registerdate = get_date_from_gmt($user->user_registered);

```
        return $registerdate;
```
```
    }
```
```
 
```

    public static function registerdate_column_sortable($columns) {

```
        $custom = array(
```

            // meta column id => sortby value used in query

            'registerdate'    => 'registered',

```
        );
```

        return wp_parse_args($custom, $columns);

```
    }
```
```
 
```

    public static function registerdate_column_orderby( $vars ) {

        if ( isset( $vars['orderby'] ) && 'registerdate' == $vars['orderby'] ) {

            $vars = array_merge( $vars, array(

                'meta_key' => 'registerdate',

                'orderby' => 'meta_value'

```
            ) );
```
```
        }
```
```
        return $vars;
```
```
    }
```
```
 
```
```
}
```
```
 
```
```
 
```
```
/*
```

 * 在WordPress插件管理界面隐藏已启用的插件（包括管理员）

```
 */
```

//add_filter( 'all_plugins', 'hide_plugins');

```
function hide_plugins($plugins)
```
```
{
```
```
    // 隐藏 你好，多莉 插件
```
```
    if(is_plugin_active('hello.php')) {
```
```
        unset( $plugins['hello.php'] );
```
```
    }
```
```
    // 隐藏 post series插件
```

    if(is_plugin_active('ankium/ankium.php')) {

        unset( $plugins['ankium/ankium.php'] );

```
    }
```
```
    return $plugins;
```
```
}
```
```
 
```
```
/*
```

 * 在WordPress插件管理界面隐藏已启用的插件（除指定用户）

```
 */
```

add_filter('all_plugins', 'filter_visible_plugins');

function filter_visible_plugins($plugins) {

    //添加插件的相对于 /wp-content/plugins/ 的路径

```
    $pluginsToHide = array(
```
```
        'hello.php',
```
```
        'ankium/ankium.php'
```
```
    );
```

    //在这个例子中，我们对所有用户隐藏插件，除了用户 smith

    $currentUser = wp_get_current_user();

    $shouldHide = $currentUser->get('user_login') != 'ankium';

```
 
```
```
    if ( $shouldHide ) {
```

        foreach($pluginsToHide as $pluginFile) {

            unset($plugins[$pluginFile]);

```
        }
```
```
    }
```
```
    return $plugins;
```
```
}
```
```
 
```
```
 
```
```
/*
```

 * WordPress 移除插件列表所有已启用插件的“编辑”和“停用”链接

```
 */
```

//add_filter( 'plugin_action_links', 'remove_all_plugin_actions', 10, 4 );

function remove_all_plugin_actions( $actions, $plugin_file, $plugin_data, $context )

```
{
```
```
    // 移除所有“编辑”链接
```
```
    if ( isset( $actions['edit'] ) )
```
```
    {
```
```
        unset( $actions['edit'] );
```
```
    }
```

    // 移除插件的“停用”链接

    if( isset( $actions['deactivate'] ) )

```
    {
```

        unset( $actions['deactivate'] );

```
    }
```
```
    return $actions;
```
```
}
```
```
 
```
```
 
```
```
/*
```

 * WordPress 移除插件列表已启用特定插件的“编辑”和“停用”链接

```
 */
```

//add_filter( 'plugin_action_links', 'remove_plugin_actions', 10, 4 );

function remove_plugin_actions( $actions, $plugin_file, $plugin_data, $context )

```
{
```
```
    // 移除所有“编辑”链接
```
```
    if ( isset( $actions['edit'] ) )
```
```
    {
```
```
        unset( $actions['edit'] );
```
```
    }
```

    // 移除插件的“停用”链接

    if( isset( $actions['deactivate'] ) )

```
    {
```
```
        switch($plugin_file)
```
```
        {
```

            // 添加插件的主文件目录

            case 'hello.php': // 注意结尾是英文冒号

                unset( $actions['deactivate'] );

```
                break;
```
```
        }
```
```
    }
```
```
    return $actions;
```
```
}
```
```
 
```
```
 
```
```
/*
```

 * WordPress 禁用自定义文章类型的可视化编辑器

```
 */
```

//add_filter( 'user_can_richedit', 'disable_wysiwyg_editor_for_cpt' );

function disable_wysiwyg_editor_for_cpt( $default ) {

```
    global $post;
```

    if ( get_post_type( $post ) == 'question') // 请修改 question 为你的文章类型

```
        return false;
```
```
    return $default;
```
```
}
```
```
 
```
```
 
```
```
/*
```

 * WordPress 仪表盘显示待审核的文章列表

```
 */
```

add_action('wp_dashboard_setup', 'wpjam_modify_dashboard_widgets' );

function wpjam_modify_dashboard_widgets() {

```
    global $wp_meta_boxes;
```
```
 
```

    if(current_user_can('manage_options')){ //只有管理员才能看到

        add_meta_box( 'pending_posts_dashboard_widget', '待审文章', 'pending_posts_dashboard_widget_function','dashboard', 'normal', 'core' );

```
    }
```
```
}
```

function pending_posts_dashboard_widget_function() {

```
    global $wpdb;
```

    $pending_posts = $wpdb->get_results("SELECT * FROM {$wpdb->posts}  WHERE post_status = 'pending' ORDER BY post_modified DESC");

```
 
```

    if($pending_posts){ //判断是否有待审文章

```
        echo '<ul>';
```

        foreach ($pending_posts as $pending_post){

            echo '<li><a href="'.admin_url().'post.php?post='.$pending_post->ID.'&action=edit">'.$pending_post->post_title.'</a></li>';

```
        }
```
```
        echo '</ul>';
```

    }else echo '目前没有待审文章';

```
}
```
```
 
```
```
 
```
```
/*
```

 * WordPress 仪表盘“近期评论”显示完整评论内容和格式

```
 */
```

//add_filter('comment_excerpt', 'full_comments_on_dashboard');

function full_comments_on_dashboard($excerpt) {

```
    global $comment;
```
```
 
```
```
    if ( !is_admin() )
```
```
        return $excerpt;
```
```
 
```

    $content = wpautop($comment->comment_content);

    $content = substr($content, 3, -5); // 移除第一个 <p> 和最后一个 </p>

    $content = str_replace('<p>', '<p style="display:block; margin:1em 0">', $content);

```
 
```
```
    return $content;
```
```
}
```
```
 
```
```
 
```
```
/*
```

 * WordPress 后台文章列表根据文章状态添加不同背景色

```
 */
```

add_action('admin_footer','posts_status_color');

```
function posts_status_color(){
```
```
    ?>
```
```
    <style>
```

        .status-draft{background: #FCE3F2 !important;/*草稿*/}

        .status-pending{background: #87C5D6 !important;/*待审核*/}

        .status-publish{/* 已发布，使用默认背景色，你也可以自己添加颜色 */}

        .status-future{background: #C6EBF5 !important;/*定时发布*/}

        .status-private{background:#F2D46F;/*私密日志*/}

        .post-password-required{background:#D874DE;/*密码保护*/}

```
    </style>
```
```
    <?php
```
```
}
```
```
 
```
```
 
```
```
/*
```
```
 * 更改标题输入框提示文字
```
```
 */
```

add_filter( 'enter_title_here', 'change_default_title' );

function change_default_title( $title ){

```
    $screen = get_current_screen();
```
```
 
```

    if( 'post' == $screen->post_type ) {

```
        $title = '输入文章标题';
```

    } elseif ('page' == $screen->post_type) {

```
        $title = '输入页面标题';
```

    } elseif ('book' == $screen->post_type) {

```
        $title = '输入书籍标题';
```
```
    }
```
```
 
```
```
    return $title;
```
```
}
```
```
 
```
```
/*
```

 * 让WordPress记住不同主题下所选择的的页面模板

```
 */
```

add_action( "updated_post_meta", "rmt_update_post_template_meta", 10, 4 );

add_action( "added_post_meta", "rmt_update_post_template_meta", 10, 4 );

function rmt_update_post_template_meta( $meta_id, $post_id, $meta_key, $meta_value ){

```
 
```

    if( '_wp_page_template' === $meta_key ){

```
 
```
```
        $theme = wp_get_theme();
```
```
        $name = $theme->template;
```
```
        if( $name ){
```

            update_post_meta( $post_id, '_wp_page_template_' . $name, $meta_value );

```
        }
```
```
 
```
```
    }
```
```
 
```
```
}
```

add_filter( 'get_post_metadata', 'rmt_get_post_template_meta', 10, 4 );

function rmt_get_post_template_meta( $value, $post_id, $meta_key, $single ){

```
 
```

    if( '_wp_page_template' === $meta_key ){

```
 
```
```
        $theme = wp_get_theme();
```
```
        $name = $theme->template;
```
```
 
```
```
        if( $name ){
```

            $template = get_post_meta( $post_id, '_wp_page_template_' . $name, $single );

            if( $template  && locate_template( $template ) ){

```
                $value = $template;
```
```
            }
```
```
        }
```
```
 
```
```
    }
```
```
 
```
```
    return $value;
```
```
}
```
```
 
```
```
 
```
```
/*
```
```
 * 在媒体库显示文件尺寸
```
```
 */
```

//add_filter('manage_upload_columns', 'size_column_register');

function size_column_register($columns) {

    $columns['dimensions'] = __('Dimensions');

```
    return $columns;
```
```
}
```

//add_action('manage_media_custom_column', 'size_column_display', 10, 2);

function size_column_display($column_name, $post_id) {

    if( 'dimensions' != $column_name || !wp_attachment_is_image($post_id))

```
        return;
```

    list($url, $width, $height) = wp_get_attachment_image_src($post_id, 'full');

    echo esc_html("{$width}×{$height}");

```
}
```
```
 
```
```
/*
```

 * 在媒体编辑页面显示文件大小

```
 */
```

//add_action( 'attachment_submitbox_misc_actions', 'mc_attachment_submitbox_filesize' );

function mc_attachment_submitbox_filesize() {

```
    $post = get_post();
```

    $filesize = @filesize( get_attached_file( $post->ID ) );

```
 
```

    if ( ! empty( $filesize ) && is_numeric( $filesize ) && $filesize > 0 ) : ?>

```
        <div class="misc-pub-section">
```

            <?php _e( '文件大小:' ); ?> <strong><?php echo size_format( $filesize ); ?></strong>

```
        </div>
```
```
    <?php
```
```
    endif;
```
```
}
```
```
 
```
```
/*
```

 * 让WordPress后台用户列表可以搜索名字、姓氏和公开显示名

```
 */
```

if (is_admin()) {//让函数只应用于WordPress后台

```
    //通过钩子挂载函数
```

    add_action('pre_user_query', 'wpdaxue_pre_user_query');

```
}
```

function wpdaxue_pre_user_query($user_search) {

```
    global $wpdb;
```
```
    $vars = $user_search->query_vars;
```
```
    if (!is_null($vars['search'])) {
```

        // 出于某种原因，搜索词被星号包括，删除它们

        $search = preg_replace('/^\*/', '', $vars['search']);

        $search = preg_replace('/\*$/', '', $search);

```
 
```
```
        //搜索公开显示名
```
```
        if(!empty($search)){
```

            $user_search->query_where = substr(trim($user_search->query_where), 0, -1) . " OR display_name LIKE '%". $search . "%')";

```
        }
```
```
        //搜索名字和姓氏
```

        $user_search->query_from .= " INNER JOIN {$wpdb->usermeta} m1 ON " .

            "{$wpdb->users}.ID=m1.user_id AND (m1.meta_key='first_name')";

        $user_search->query_from .= " INNER JOIN {$wpdb->usermeta} m2 ON " .

            "{$wpdb->users}.ID=m2.user_id AND (m2.meta_key='last_name')";

        $names_where = $wpdb->prepare("m1.meta_value LIKE '%s' OR m2.meta_value LIKE '%s'", "%{$search}%", "%$search%");

        $user_search->query_where = str_replace('WHERE 1=1 AND (', "WHERE 1=1 AND ({$names_where} OR ", $user_search->query_where);

```
    }
```
```
    return $user_search;
```
```
}
```
```
 
```
```
/*
```

 * 为WordPress后台的文章、分类等显示ID

```
 */
```
```
add_action('admin_init', 'ssid_add');
```
```
// 添加一个新的列 ID
```
```
function ssid_column($cols) {
```
```
    $cols['ssid'] = 'ID';
```
```
    return $cols;
```
```
}
```
```
// 显示 ID
```

function ssid_value($column_name, $id) {

```
    if ($column_name == 'ssid')
```
```
        echo $id;
```
```
}
```

function ssid_return_value($value, $column_name, $id) {

```
    if ($column_name == 'ssid')
```
```
        $value = $id;
```
```
    return $value;
```
```
}
```
```
// 为 ID 这列添加css
```
```
function ssid_css() {
```
```
    ?>
```
```
    <style type="text/css">
```

        #ssid { width: 50px; } /* Simply Show IDs */

```
    </style>
```
```
    <?php
```
```
}
```

// 通过动作/过滤器输出各种表格和CSS

```
function ssid_add() {
```

    add_action('admin_head', 'ssid_css');

```
 
```

    add_filter('manage_posts_columns', 'ssid_column');

    add_action('manage_posts_custom_column', 'ssid_value', 10, 2);

```
 
```

    add_filter('manage_pages_columns', 'ssid_column');

    add_action('manage_pages_custom_column', 'ssid_value', 10, 2);

```
 
```

    add_filter('manage_media_columns', 'ssid_column');

    add_action('manage_media_custom_column', 'ssid_value', 10, 2);

```
 
```

    add_filter('manage_link-manager_columns', 'ssid_column');

    add_action('manage_link_custom_column', 'ssid_value', 10, 2);

```
 
```

    add_action('manage_edit-link-categories_columns', 'ssid_column');

    add_filter('manage_link_categories_custom_column', 'ssid_return_value', 10, 3);

```
 
```

    foreach ( get_taxonomies() as $taxonomy ) {

        add_action("manage_edit-${taxonomy}_columns", 'ssid_column');

        add_filter("manage_${taxonomy}_custom_column", 'ssid_return_value', 10, 3);

```
    }
```
```
 
```

    add_action('manage_users_columns', 'ssid_column');

    add_filter('manage_users_custom_column', 'ssid_return_value', 10, 3);

```
 
```

    add_action('manage_edit-comments_columns', 'ssid_column');

    add_action('manage_comments_custom_column', 'ssid_value', 10, 2);

```
}
```
```
 
```
```
 
```
```
/*
```

 * 为WordPress页面添加标签和分类

```
 */
```
```
 
```
```
class PTCFP{
```
```
 
```
```
    function __construct(){
```

        add_action( 'init', array( $this, 'taxonomies_for_pages' ) );

        //确保这些查询修改不会作用于管理后台，防止文章和页面混杂

```
        if ( ! is_admin() ) {
```

            add_action( 'pre_get_posts', array( $this, 'category_archives' ) );

            add_action( 'pre_get_posts', array( $this, 'tags_archives' ) );

```
        }
```
```
    }
```
```
 
```

    //为“页面”添加“标签”和“分类”

```
    function taxonomies_for_pages() {
```

        register_taxonomy_for_object_type( 'post_tag', 'page' );

        register_taxonomy_for_object_type( 'category', 'page' );

```
    }
```
```
 
```

    //在标签存档中包含“页面”

    function tags_archives( $wp_query ) {

```
        if ( $wp_query->get( 'tag' ) )
```

            $wp_query->set( 'post_type', 'any' );

```
    }
```
```
 
```

    //在分类存档中包含“页面”

    function category_archives( $wp_query ) {

        if ( $wp_query->get( 'category_name' ) || $wp_query->get( 'cat' ) )

            $wp_query->set( 'post_type', 'any' );

```
    }
```
```
 
```
```
}
```
```
 
```
```
$ptcfp = new PTCFP();
```
```
 
```
```
/*
```
```
 * 限制文章标题输入字数
```
```
 */
```

//add_action( 'admin_head-post.php', 'title_count_js');

//add_action( 'admin_head-post-new.php', 'title_count_js');

```
function title_count_js(){
```

    echo '<script>jQuery(document).ready(function(){

    jQuery("#titlewrap").after("<div><small>标题字数: </small><input type=\"text\" value=\"0\" maxlength=\"3\" size=\"3\" id=\"title_counter\" readonly=\"\" style=\"background:#fff;\"> <small>最大长度不得超过 46 个字</small></div>");

    jQuery("#title_counter").val(jQuery("#title").val().length);

    jQuery("#title").keyup( function() {

    jQuery("#title_counter").val(jQuery("#title").val().length);

```
    });
```

    jQuery("#titlewrap #title").keyup( function() {

```
    var $this = jQuery(this);
```
```
    if($this.val().length > 46)
```

    $this.val($this.val().substr(0, 46));

```
    });
```
```
});</script>';
```
```
}
```
```
 
```
```
/*
```

 * 自定义排序WordPress后台管理菜单

```
 */
```

//add_filter('custom_menu_order', 'custom_menu_order');

//add_filter('menu_order', 'custom_menu_order');

```
function custom_menu_order($menu_ord) {
```
```
    if (!$menu_ord) return true;
```
```
    return array(
```

        'index.php', // “仪表盘”菜单

        'edit.php?post_type=question', // 自定义文章类型的菜单

        'edit-comments.php', //“评论”菜单

        'upload.php', //“多媒体”菜单

        'edit.php?post_type=cmp_slider', //自定义文章类型的菜单

        'plugins.php', //“插件”菜单

        'themes.php', //“主题”菜单

        'edit.php?post_type=page', // “页面”菜单

        'edit.php', // “文章”菜单

```
    );
```
```
}
```
```
 
```
```
/*
```

 * 在WordPress仪表盘“概况”显示自定义文章类型数据

```
 */
```

add_action( 'right_now_content_table_end' , 'wph_right_now_content_table_end' );

function wph_right_now_content_table_end() {

```
    $args = array(
```
```
        'public' => true ,
```
```
        '_builtin' => false
```
```
    );
```
```
    $output = 'object';
```
```
    $operator = 'and';
```

    $post_types = get_post_types( $args , $output , $operator );

    foreach( $post_types as $post_type ) {

        $num_posts = wp_count_posts( $post_type->name );

        $num = number_format_i18n( $num_posts->publish );

        $text = _n( $post_type->labels->singular_name, $post_type->labels->name , intval( $num_posts->publish ) );

        if ( current_user_can( 'edit_posts' ) ) {

            $num = "<a href='edit.php?post_type=$post_type->name'>$num</a>";

            $text = "<a href='edit.php?post_type=$post_type->name'>$text</a>";

```
        }
```

        echo '<tr><td class="first num b b-' . $post_type->name . '">' . $num . '</td>';

        echo '<td class="text t ' . $post_type->name . '">' . $text . '</td></tr>';

```
    }
```

    $taxonomies = get_taxonomies( $args , $output , $operator );

    foreach( $taxonomies as $taxonomy ) {

        $num_terms  = wp_count_terms( $taxonomy->name );

        $num = number_format_i18n( $num_terms );

        $text = _n( $taxonomy->labels->singular_name, $taxonomy->labels->name , intval( $num_terms ));

        if ( current_user_can( 'manage_categories' ) ) {

            $num = "<a href='edit-tags.php?taxonomy=$taxonomy->name'>$num</a>";

            $text = "<a href='edit-tags.php?taxonomy=$taxonomy->name'>$text</a>";

```
        }
```

        echo '<tr><td class="first b b-' . $taxonomy->name . '">' . $num . '</td>';

        echo '<td class="t ' . $taxonomy->name . '">' . $text . '</td></tr>';

```
    }
```
```
}
```
```
 
```
```
/*
```

 * 仪表盘[活动]小工具输出自定义文章类型

```
 */
```
```
if ( is_admin() ) {
```

    add_filter( 'dashboard_recent_posts_query_args', 'wpdx_add_cpt_to_dashboard_activity' );

    function wpdx_add_cpt_to_dashboard_activity( $query ) {

        // 如果你要显示所有文章类型，就删除下行的 //，并在 11 行前面添加 //

        // $post_types = get_post_types();

        // 如果你仅仅希望显示指定的文章类型，可以修改下行的数组内容，并确保上行前面添加 //

        $post_types = ['post', 'download'];

        if ( is_array( $query['post_type'] ) ) {

            $query['post_type'] = $post_types;

```
        } else {
```
```
            $temp = $post_types;
```

            $query['post_type'] = $temp;

```
        }
```
```
        return $query;
```
```
    }
```
```
}
```
```
 
```
```
/*
```
```
 * 显示所有设置菜单
```
```
 */
```

add_action('admin_menu', 'all_settings_link');

```
function all_settings_link() {
```

    add_options_page(__('All Settings'), __('All Settings'), 'administrator', 'options.php');

```
}
```
```
 
```
```
/*
```

 * 在WordPress后台文章编辑器的上方或下方添加提示内容

```
 */
```

add_action( 'edit_form_after_title', 'below_the_title' );

```
function below_the_title() {
```

    echo '<h3>在编辑器上方添加的提示内容</h3>';

```
}
```

add_action( 'edit_form_after_editor', 'below_the_editor' );

```
function below_the_editor() {
```

    echo '<h4>在编辑器下方添加的提示内容</h4>';

```
}
```
```
 
```
```
/*
```

 * 在后台页面管理列表中隐藏特定的页面

```
 */
```

add_action( 'pre_get_posts' ,'exclude_this_page' );

```
function exclude_this_page( $query ) {
```
```
    if( !is_admin() )
```
```
        return $query;
```
```
    global $pagenow;
```

    if( 'edit.php' == $pagenow && ( get_query_var('post_type') && 'page' == get_query_var('post_type') ) )

        $query->set( 'post__not_in', array(23,28,30) ); // 页面的ID

```
    return $query;
```
```
}
```
```
 
```
```
/*
```

 * 修改 WordPress 发送邮件的默认邮箱和发件人

```
 */
```

add_filter('wp_mail_from_name', 'new_from_name');

add_filter('wp_mail_from', 'new_from_email');

function new_from_name($email){//默认发件人

    $wp_from_name = get_option('blogname');

```
    return $wp_from_name;
```
```
}
```

function new_from_email($email) {//默认发件箱

    $wp_from_email = get_option('admin_email');

```
    return $wp_from_email;
```
```
}
```
```
 
```
```
/*
```

 * WordPress仪表盘添加自定义Feed订阅

```
 */
```

add_action('wp_dashboard_setup', 'ankium_add_dashboard_widgets' );

function dashboard_custom_feed_output() {

```
    echo '<div class="rss-widget">';
```
```
    wp_widget_rss_output(array(
```

        'url' => 'http://www.ankium.com/feed/', //rss地址

        'title' => '查看安琪云的最新内容',

        'items' => 10,         //显示篇数

        'show_summary' => 0,  //是否显示摘要，1为显示

        'show_author' => 0,   //是否显示作者，1为显示

        'show_date' => 1  )); //是否显示日期

```
    echo '</div>';
```
```
}
```

function ankium_add_dashboard_widgets() {

    wp_add_dashboard_widget('example_dashboard_widget', '安琪云', 'dashboard_custom_feed_output');

```
}
```
```
 
```
```
/*
```

 * 自定义WordPress图片附件的默认链接方式(’none’,’file’,’post’)

```
 */
```

update_option('image_default_link_type', 'file');

```
 
```
```
/*
```

 * 关闭WordPress的XML-RPC离线发布功能

```
 */
```

add_filter('xmlrpc_enabled', '__return_false');

```
 
```
```
/*
```

 * 恢复WordPress默认上传路径和生成文件的URL地址

```
 */
```

if(get_option('upload_path')=='wp-content/uploads' || get_option('upload_path')==null) {

    update_option('upload_path',WP_CONTENT_DIR.'/uploads');

```
}
```
```
 
```
```
/*
```

 * 自定义WordPress媒体文件的上传路径和生成文件的URL地址

```
 */
```

//add_filter( 'upload_dir', 'wpjam_custom_upload_dir' );

function wpjam_custom_upload_dir( $uploads ) {

```
    $upload_path = '';
```
```
    $upload_url_path = '';
```
```
 
```

    if ( empty( $upload_path ) || 'wp-content/uploads' == $upload_path ) {

        $uploads['basedir']  = WP_CONTENT_DIR . '/uploads';

    } elseif ( 0 !== strpos( $upload_path, ABSPATH ) ) {

        $uploads['basedir'] = path_join( ABSPATH, $upload_path );

```
    } else {
```

        $uploads['basedir'] = $upload_path;

```
    }
```
```
 
```

    $uploads['path'] = $uploads['basedir'].$uploads['subdir'];

```
 
```
```
    if ( $upload_url_path ) {
```

        $uploads['baseurl'] = $upload_url_path;

        $uploads['url'] = $uploads['baseurl'].$uploads['subdir'];

```
    }
```
```
    return $uploads;
```
```
}
```
```
 
```
```
/*
```

 * WordPress 后台管理员免密一键切换其他账号登录

```
 */
```

add_filter('user_row_actions', 'wpdx_user_switch_action', 10, 2);

function wpdx_user_switch_action($actions, $user){

    $capability = (is_multisite())?'manage_site':'manage_options';

```
    if(current_user_can($capability)){
```

        $actions['login_as'] = '<a title="以此身份登录" href="'.wp_nonce_url("users.php?action=login_as&users=$user->ID", 'bulk-users').'">以此身份登录</a>';

```
    }
```
```
    return $actions;
```
```
}
```

add_filter('handle_bulk_actions-users','wpdx_handle_user_switch_action', 10, 3);

function wpdx_handle_user_switch_action($sendback, $action, $user_ids){

```
    if($action == 'login_as'){
```

        wp_set_auth_cookie($user_ids, true);

```
        wp_set_current_user($user_ids);
```
```
    }
```
```
    return admin_url();
```
```
}
```
```
 
```
```
/*
```

 * WordPress自定义文章作者名称

```
 */
```

add_action('post_submitbox_misc_actions', 'cus_author_createCustomField');

add_action('save_post', 'cus_author_saveCustomField');

add_filter('the_author','cus_author_the_author');

```
/** 创建一个checkBox */
```

function cus_author_createCustomField() {

```
    $post_id = get_the_ID();
```

    if (get_post_type($post_id) != 'post') {

```
        return;
```
```
    }
```
```
    /*
```
```
     * 提取现有的值
```
```
     * @var boolean
```
```
     */
```

    $value = get_post_meta($post_id, '_custom_author_name', true);

```
    /*
```
```
     * 添加 nonce 安全处理
```
```
     */
```

    wp_nonce_field('custom_author_nonce' , 'custom_author_nonce');

```
    ?>
```

    <div class="misc-pub-section misc-pub-section-last dashicons-before dashicons-admin-users">

        <label><b>作者：</b><input type="text" value="<?php echo $value ?>" name="_custom_author_name" /></label>

```
    </div>
```
```
    <?php
```
```
}
```

//保存配置信息 $post_id 文章的ID

function cus_author_saveCustomField($post_id) {

```
    //自动保存不处理
```

    if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {

```
        return;
```
```
    }
```
```
    //信息不正确不处理
```
```
    if (
```

        !isset($_POST['custom_author_nonce']) ||

        !wp_verify_nonce($_POST['custom_author_nonce'], 'custom_author_nonce')

```
    ) {
```
```
        return;
```
```
    }
```
```
    //用户无权编辑文章不处理
```

    if (!current_user_can('edit_post', $post_id)) {

```
        return;
```
```
    }
```
```
    //存在此项目就更新
```

    if (isset($_POST['_custom_author_name'])) {

        update_post_meta($post_id, '_custom_author_name', sanitize_text_field($_POST['_custom_author_name']));

```
    } else {
```
```
        //不存在就删除
```

        delete_post_meta($post_id, '_custom_author_name');

```
    }
```
```
}
```

function cus_author_the_author($author){

    $custom_author = get_post_meta(get_the_ID(), '_custom_author_name');

```
    if ($custom_author) {
```
```
        return $custom_author[0];
```
```
    } else {
```
```
        return $author;
```
```
    }
```
```
}
```
```
 
```
```
/*
```

 * 四合一简化 WordPress 后台用户个人信息姓名昵称设置

```
 */
```

add_action('show_user_profile','wpjam_edit_user_profile');

add_action('edit_user_profile','wpjam_edit_user_profile');

function wpjam_edit_user_profile($user){

```
    ?>
```
```
    <script>
```

        jQuery(document).ready(function($) {

            $('#first_name').parent().parent().hide();

            $('#last_name').parent().parent().hide();

            $('#display_name').parent().parent().hide();

            $('.show-admin-bar').hide();

```
        });
```
```
    </script>
```
```
    <?php
```
```
}
```

//更新时候，强制设置显示名称为昵称

add_action('personal_options_update','wpjam_edit_user_profile_update');

add_action('edit_user_profile_update','wpjam_edit_user_profile_update');

function wpjam_edit_user_profile_update($user_id){

    if (!current_user_can('edit_user', $user_id))

```
        return false;
```
```
    $user = get_userdata($user_id);
```

    $_POST['nickname'] = ($_POST['nickname'])?:$user->user_login;

    $_POST['display_name']  = $_POST['nickname'];

```
    $_POST['first_name']    = '';
```
```
    $_POST['last_name']     = '';
```
```
}
```
```
 
```
```
/*
```

 * 禁用 WordPress 4.7 新增的PDF缩略图预览功能

```
 */
```

add_filter('fallback_intermediate_image_sizes', 'wpb_disable_pdf_previews');

```
function wpb_disable_pdf_previews() {
```
```
    $fallbacksizes = array();
```
```
    return $fallbacksizes;
```
```
}
```
```
 
```
```
/**
```
```
 * 新文章自动使用ID作为别名
```

 * 作用：即使你设置固定连接结构为 %postname% ，仍旧自动生成 ID 结构的链接

```
 */
```

add_action( 'save_post', 'using_id_as_slug', 10, 2 );

function using_id_as_slug($post_id, $post){

```
    global $post_type;
```

    if($post_type=='post'){ //只对文章生效

        // 如果是文章的版本，不生效

        if (wp_is_post_revision($post_id))

```
            return false;
```

        // 取消挂载该函数，防止无限循环

        remove_action('save_post', 'using_id_as_slug' );

        // 使用文章ID作为文章的别名

        wp_update_post(array('ID' => $post_id, 'post_name' => $post_id ));

```
        // 重新挂载该函数
```

        add_action('save_post', 'using_id_as_slug' );

```
    }
```
```
}
```
```
 
```
```
//根据上传时间重命名文件
```

add_filter('wp_handle_upload_prefilter', 'custom_upload_filter' );

```
function custom_upload_filter( $file ){
```
```
    $info = pathinfo($file['name']);
```
```
    $ext = $info['extension'];
```

    $filedate = date('YmdHis').rand(10,99);//为了避免时间重复，再加一段2位的随机数

```
    $file['name'] = $filedate.'.'.$ext;
```
```
    return $file;
```
```
}
```
```
 
```
```
 
```

//自动调用媒体库中的图片作为缩略图

add_action('the_post', 'wpforce_featured');

add_action('save_post', 'wpforce_featured');

add_action('draft_to_publish', 'wpforce_featured');

add_action('new_to_publish', 'wpforce_featured');

add_action('pending_to_publish', 'wpforce_featured');

add_action('future_to_publish', 'wpforce_featured');

```
function wpforce_featured() {
```
```
    global $post;
```

    $already_has_thumb = has_post_thumbnail($post->ID);

```
    if (!$already_has_thumb)  {
```

       $attached_image = get_children( "post_parent=$post->ID&post_type=attachment&post_mime_type=image&numberposts=1" );

```
        if ($attached_image) {
```

           foreach ($attached_image as $attachment_id => $attachment) {

              set_post_thumbnail($post->ID, $attachment_id);

```
            }
```
```
        } else {
```

            set_post_thumbnail($post->ID, '10181');

```
        }
```
```
    }
```
```
}  //end function
```

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