所有的WordPress主题都有一个强大的functions.php文件,这个文件的目的是让主题开发者可以随意定义主题特征和功能，就像一个WordPress插件，可以自定义代码。
删除WordPress版本号
function wpb_remove_version() {
return '';
}
add_filter('the_generator', 'wpb_remove_version');添加自定义仪表板徽标
首先，你需要自定义图标上传到主题的图片文件夹，名称custom-logo.png，尺寸为16×16像素。
function wpb_custom_logo() {
echo '
<style type="text/css">
#wpadminbar #wp-admin-bar-wp-logo > .ab-item .ab-icon:before {
background-image: url(' . get_bloginfo('stylesheet_directory') . '/images/custom-logo.png) !important;
background-position: 0 0;
color:rgba(0, 0, 0, 0);
}
#wpadminbar #wp-admin-bar-wp-logo.hover > .ab-item .ab-icon {
background-position: 0 0;
}
</style>
';
}
//hook into the administrative header output
add_action('wp_before_admin_bar_render', 'wpb_custom_logo');更改WordPress管理面板中的页脚
function remove_footer_admin () {
echo 'Fueled by <a href="http://www.wordpress.org" target="_blank">WordPress</a> | WordPress Tutorials: <a href="http://www.wpbeginner.com" target="_blank">WPBeginner</a></p>';
}
add_filter('admin_footer_text', 'remove_footer_admin');可随意更改要添加的文本和链接！
更改WordPress中的默认Gravatar
add_filter( 'avatar_defaults', 'wpb_new_gravatar' );
function wpb_new_gravatar ($avatar_defaults) {
$myavatar = 'http://example.com/wp-content/uploads/2017/01/wpb-default-gravatar.png';
$avatar_defaults[$myavatar] = "Default Gravatar";
return $avatar_defaults;
}
WordPress页脚动态版权日期
function wpb_copyright() {
global $wpdb;
$copyright_dates = $wpdb->get_results("
SELECT
YEAR(min(post_date_gmt)) AS firstdate,
YEAR(max(post_date_gmt)) AS lastdate
FROM
$wpdb->posts
WHERE
post_status = 'publish'
");
$output = '';
if($copyright_dates) {
$copyright = "© " . $copyright_dates[0]->firstdate;
if($copyright_dates[0]->firstdate != $copyright_dates[0]->lastdate) {
$copyright .= '-' . $copyright_dates[0]->lastdate;
}
$output = $copyright;
}
return $output;
}添加此功能后，您需要打开您的footer.php文件，并添加以下代码
<?php echo wpb_copyright(); ?>
在WordPress中随机更改背景颜色
function wpb_bg() {
$rand = array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f');
$color ='#'.$rand[rand(0,15)].$rand[rand(0,15)].$rand[rand(0,15)].
$rand[rand(0,15)].$rand[rand(0,15)].$rand[rand(0,15)];
echo $color;
}编辑主题中的header.php文件。找到
标签并添加以下行替换它：<body <?php body_class(); ?> style="background-color:<?php wpb_bg();?>">>
在WordPress中禁用通过电子邮件登录
remove_filter( 'authenticate', 'wp_authenticate_email_password', 20 );
在WordPress中禁用搜索功能
function fb_filter_query( $query, $error = true ) {
if ( is_search() ) {
$query->is_search = false;
$query->query_vars[s] = false;
$query->query[s] = false;
// to error
if ( $error == true )
$query->is_404 = true;
}
}
add_action( 'parse_query', 'fb_filter_query' );
add_filter( 'get_search_form', create_function( '$a', "return null;" ) );在WordPress中添加一个管理员用户
如果你忘记了你的WordPress密码和电子邮件，则可以使用FTP客户端将此代码添加到主题的功能文件中，以添加管理员用户。
function wpb_admin_account(){
$user = 'Username';
$pass = 'Password';
$email = 'email@domain.com';
if ( !username_exists( $user ) && !email_exists( $email ) ) {
$user_id = wp_create_user( $user, $pass, $email );
$user = new WP_User( $user_id );
$user->set_role( 'administrator' );
} }
add_action('init','wpb_admin_account');不要忘记填写用户名，密码和电子邮件，登录到你的WordPress站点，不要忘记删除代码。
显示WordPress的注册用户总数
// Function to return user count
function wpb_user_count() {
$usercount = count_users();
$result = $usercount['total_users'];
return $result;
}
// Creating a shortcode to display user count
add_shortcode('user_count', 'wpb_user_count');
WordPress上传添加额外的文件类型
function my_myme_types($mime_types){
$mime_types['svg'] = 'image/svg+xml'; //Adding svg extension
$mime_types['psd'] = 'image/vnd.adobe.photoshop'; //Adding photoshop files
return $mime_types;
}
add_filter('upload_mimes', 'my_myme_types', 1, 1);这段代码是允许你上传SVG和PSD文件。
在WordPress文章中添加一个作者信息框
function wpb_author_info_box( $content ) {
global $post;
// Detect if it is a single post with a post author
if ( is_single() && isset( $post->post_author ) ) {
// Get author's display name
$display_name = get_the_author_meta( 'display_name', $post->post_author );
// If display name is not available then use nickname as display name
if ( empty( $display_name ) )
$display_name = get_the_author_meta( 'nickname', $post->post_author );
// Get author's biographical information or description
$user_description = get_the_author_meta( 'user_description', $post->post_author );
// Get author's website URL
$user_website = get_the_author_meta('url', $post->post_author);
// Get link to the author archive page
$user_posts = get_author_posts_url( get_the_author_meta( 'ID' , $post->post_author));
if ( ! empty( $display_name ) )
$author_details = '<p class="author_name">About ' . $display_name . '</p>';
if ( ! empty( $user_description ) )
// Author avatar and bio
$author_details .= '<p class="author_details">' . get_avatar( get_the_author_meta('user_email') , 90 ) . nl2br( $user_description ). '</p>';
$author_details .= '<p class="author_links"><a href="'. $user_posts .'">View all posts by ' . $display_name . '</a>';
// Check if author has a website in their profile
if ( ! empty( $user_website ) ) {
// Display author website link
$author_details .= ' | <a href="' . $user_website .'" target="_blank" rel="nofollow">Website</a></p>';
} else {
// if there is no author website then just close the paragraph
$author_details .= '</p>';
}
// Pass all this info to post content
$content = $content . '<footer class="author_bio_section" >' . $author_details . '</footer>';
}
return $content;
}
// Add our function to the post content filter
add_action( 'the_content', 'wpb_author_info_box' );
// Allow HTML in author bio section
remove_filter('pre_user_description', 'wp_filter_kses');添加一些自定义CSS
.author_bio_section{
background: none repeat scroll 0 0 #F5F5F5;
padding: 15px;
border: 1px solid #ccc;
}
.author_name{
font-size:16px;
font-weight: bold;
}
.author_details img {
border: 1px solid #D8D8D8;
border-radius: 50%;
float: left;
margin: 0 10px 10px 0;
}
样式：
文章链接：https://www.sbkko.com/1-39.html
文章标题：wordpress一些你可能不知道的小技巧
文章版权：SBKKO 所发布的内容，部分为原创文章，转载请注明来源，网络转载文章如有侵权请联系我们！
文章标题：wordpress一些你可能不知道的小技巧
文章版权：SBKKO 所发布的内容，部分为原创文章，转载请注明来源，网络转载文章如有侵权请联系我们！
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