Insert Author Box

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');

TAMBAH ASNG DLM CSS UNTUK CANTIKKAN STYLE
.author-box { padding: 10px; background: #ccc; border: 1px solid #333;} 
.author-left {float:left; width: 80px; margin:0 15px 0 0;} 
.author-right {float:left; font-size: 13px; margin:5px 0 0 10px;} 
.author-pic {border: 1px solid: #ccc;} 
.author-name {font-weight:bold;} 
.author-bio {padding:5px 0 5px 0;} 
.author-url {color: #555;} 
.author-url a {color: #000;} 
.author-url a:hover {color: #333;}
.clear {clear:both}