Lego2012

Steps to customize the admin columns

Add columns

You can use WordPress hooks such as manage_posts_columns or manage_${post_type}_posts_columns to customize the standard columns. For example, to add a new column for the post type “Books”, the code looks like this:

function my_custom_book_columns($columns) {
    // Neue Spalte hinzufügen
    $columns['book_author'] = __('Autor');
    return $columns;
}

Lego2012

$post_type = 'my_post_type';

// Register the columns.
add_filter( "manage_{$post_type}_posts_columns", function ( $defaults ) {
  $defaults['custom-one'] = 'Custom One';
  $defaults['custom-two'] = 'Custom Two';
  return $defaults;
  }
);

Lego2012

Put this code in the footer template

/***********************
* Push Footer to the end
***********************/
/* Make the HTML and body elements take up the full height of the viewport */
html, body {
  height: 100%;
 margin: 0; /* Remove default margins to prevent spacing issues */

Lego2012

function redirect_after_logout(){
    wp_redirect( home_url() );
    exit();
}
add_action('wp_logout', 'redirect_after_logout');

Lego2012

// Remove WordPress Dashboard Widgets

 function bt_remove_dashboard_widgets() {
    remove_action( 'welcome_panel', 'wp_welcome_panel' ); // Welcome Panel
    remove_meta_box( 'dashboard_site_health', 'dashboard', 'normal' ); // Remove Health
    remove_meta_box( 'duplicator_dashboard_widget', 'dashboard', 'normal' ); // Remove Duplicator
    remove_meta_box( 'wsf_dashboard_widget', 'dashboard', 'normal' ); // Remove WS Form
    remove_meta_box( 'dashboard_quick_press', 'dashboard', 'side' ); // Quick Press Widget
    remove_meta_box( 'dashboard_right_now', 'dashboard', 'normal' ); // Right now
    remove_meta_box( 'dashboard_primary', 'dashboard', 'side' ); // WordPress.com Blog

Lego2012

// Befreit den Header von unnötigen Einträgen
// https://www.drweb.de/wordpress-snippets/

add_action('init', 'evolution_remheadlink');
function evolution_remheadlink()
{
    remove_action('wp_head', 'rsd_link');
    remove_action('wp_head', 'wp_generator');
    remove_action('wp_head', 'index_rel_link');
    remove_action('wp_head', 'wlwmanifest_link');

Lego2012

// Function for post duplication. Dups appear as drafts. User is redirected to the edit screen

function rd_duplicate_post_as_draft()
{
    if (!current_user_can("edit_posts")) {
        return;
    }

    /*
     * Nonce verification

Lego2012

add_filter("the_content", "add_image_dimensions");

function add_image_dimensions($content)
{
    preg_match_all("/<img[^>]+>/i", $content, $images);

    if (count($images) < 1) {
        return $content;
    }

Lego2012

// Ein neues Logo für den Adminbereich und eine eigene Hintergrundfarbe
// @author Andreas Hecht
// https://www.drweb.de/wordpress-snippets/

function ah_login_logo() {
    ?>
     <style type="text/css">
     #login h1 a, .login h1 a {
     background-image: url(<?php echo get_stylesheet_directory_uri(); ?>/images/dein-logo.png);
     margin-bottom: 0;

Lego2012

add_theme_support( 'post-thumbnails' );
add_image_size( 'image-480', 480, 9999 );
add_image_size( 'image-640', 640, 9999 );
add_image_size( 'image-720', 720, 9999 );
add_image_size( 'image-960', 960, 9999 );
add_image_size( 'image-1168', 1168, 9999 );
add_image_size( 'image-1440', 1440, 9999 );
add_image_size( 'image-1920', 1920, 9999 );

function my_custom_sizes( $sizes ) {