WordPress-Handbuch WordPress-Handbuch
WordPress-Handbuch
/ listing-16-2.htaccess
Last active
May 8, 2019 06:11
Take Control of the HTTP Expiration Headers and disable ETags
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| <IfModule mod_expires.c> | |
| ExpiresActive On | |
| FileETag None | |
| Header unset ETag | |
| ExpiresDefault "access plus 1 month" | |
| ExpiresByType text/css "access plus 1 year" | |
| ExpiresByType application/atom+xml "access plus 1 hour" | |
| ExpiresByType application/rdf+xml "access plus 1 hour" | |
| ExpiresByType application/rss+xml "access plus 1 hour" | |
| ExpiresByType image/vnd.microsoft.icon "access plus 1 year" |
WordPress-Handbuch
/ listing-18-18.php
Created
April 23, 2019 06:11
WordPress 5 dropin /wp-content/maintenance.php, a custom maintenance message when using the .maintenance-mechanism in the main directory
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| <?php | |
| header('HTTP/1.1 503 Service Temporarily Unavailable'); | |
| header('Status: 503 Service Temporarily Unavailable'); | |
| header('Retry-After: 3600'); | |
| ?><!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Website wird gewartet</title> | |
| </head> |
WordPress-Handbuch
/ listing-21-1.php
Last active
April 19, 2019 14:24
Basic functions.php for a Twenty Nineteen child theme
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| <?php | |
| add_action( 'wp_enqueue_scripts', 'twentynineteen_child_enqueue_styles' ); | |
| function twentynineteen_child_enqueue_styles() { | |
| $parent_style = 'twentynineteen-style'; | |
| wp_enqueue_style( $parent_style, get_template_directory_uri() . '/style.css' ); | |
| wp_enqueue_style( 'twentynineteen-child-style', | |
| get_stylesheet_directory_uri() . '/style.css', | |
| array( $parent_style ), | |
| filemtime(get_stylesheet_directory() . '/style.css') | |
| ); |
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| /* CSS Styles ausserhalb der folgenden speziellen Media Querys sind fuer grosse Monitore, breiter als 1199px, vorgesehen */ | |
| @media all and (max-width: 1199px) { | |
| /* CSS Styles fuer grosse Displays */ | |
| } | |
| @media all and (max-width: 991px) { | |
| /* CSS Styles fuer Tablets hochkant */ | |
| } | |
| @media all and (max-width: 768px) { | |
| /* CSS Styles fuer Smartphones, horizontal */ | |
| } |
WordPress-Handbuch
/ listing-20-1.php
Last active
April 11, 2019 07:18
Example WordPress 5 widget to display a configurable number of event entries from the database, originally populated through a new custom post type
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| <?php | |
| /** | |
| * @package WH_Event_Widget | |
| * @version 1.0.0 | |
| */ | |
| /* | |
| Plugin Name: WH Event Widget | |
| Plugin URI: https://wordpress-handbuch.com | |
| Description: Anzeige aktueller Veranstaltungen | |
| Author: Johannes Mustermann |
WordPress-Handbuch
/ listing-18-14.php
Last active
April 11, 2019 07:06
Anti spam measure: Remove all links in WordPress comments when the comment form is being submitted, using a filter hook
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| function wh_remove_comment_links( $content ) { | |
| global $allowedtags; | |
| $tags = $allowedtags; | |
| unset( $tags['a'] ); | |
| $content = addslashes( wp_kses( stripslashes( $content ), $tags ) ); | |
| return $content; | |
| } | |
| add_filter( 'pre_comment_content', 'wh_remove_comment_links' ); |
WordPress-Handbuch
/ listing-18-13.php
Last active
April 11, 2019 07:05
Remove website field from WordPress' comment form through filter hook in functions.php
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| function wh_emove_url_from_comment_form( $fields ) { | |
| unset( $fields['url'] ); | |
| return $fields; | |
| } | |
| add_filter( 'comment_form_default_fields', 'wh_remove_url_from_comment_form' ); |
WordPress-Handbuch
/ listing-18-12.php
Last active
April 11, 2019 07:03
Exchange the backend WordPress note in the footer with an own message, via filter hook in functions.php
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| function wh_wordpress_backend_footer () { | |
| echo 'WordPress sauber installiert und konfiguriert dank des umfassenden und sagenhaften <a href="https://wordpress-handbuch.com" target="_blank">WordPress-Handbuchs</a></p>'; | |
| } | |
| add_filter('admin_footer_text', 'wh_wordpress_backend_footer'); |
WordPress-Handbuch
/ listing-18-11.php
Last active
April 11, 2019 07:02
Exchange the WordPress backend dashboard logo in the top left corner (should be 20px by 20px) through functions.php action hook
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| function wh_wordpress_backend_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-size: 20px 20px; | |
| background-position: 0 0; | |
| color:rgba(0, 0, 0, 0); | |
| } | |
| #wpadminbar #wp-admin-bar-wp-logo.hover > .ab-item .ab-icon { |
WordPress-Handbuch
/ listing-18-16.php
Created
April 11, 2019 06:46
Display new image sizes choices set through add_image_size() also in the backend in the right sidebar when editing an image
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| function wh_add_image_sizes_to_backend( $existingsizes ) { | |
| $addsizes = array( | |
| "wh-homepage-teaser" => 'WH Homepage Teaser', | |
| "wh-landingpage-stage" => 'WH Landingpage Stage', | |
| "wh-detailpage-feature" => 'WH Detailpage Feature' | |
| ); | |
| $newsizes = array_merge( $existingsizes, $addsizes ); | |
| return $newsizes; | |
| } | |
| add_filter( 'image_size_names_choose', 'wh_add_image_sizes_to_backend' ); |