WordPress-Handbuch WordPress-Handbuch

Here you can find all listings as GitHub gists: https://gist.github.com/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

	<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-16-3.php

Last active March 7, 2019 07:38

Code example to output cached and uncached content through the fragment cache in W3 Total Cache (WordPress plugin)

	<?php
	if (!defined('W3TC_DYNAMIC_SECURITY')) {
	define('W3TC_DYNAMIC_SECURITY', 'geheimesgeheimnis');
	}
	?>
	<!--mfunc <?php echo W3TC_DYNAMIC_SECURITY; ?> echo 'Gecachter Inhalt: ' . date("Y-m-d", time()); -->
	<?php echo 'Live-Inhalt: ' . date("Y-m-d", time()); ?>
	<!--/mfunc <?php echo W3TC_DYNAMIC_SECURITY; ?> -->

WordPress-Handbuch / listing-16-4.php

Created March 7, 2019 13:24

404 handler for WordPress search showing posts alternatives related to the page not found, and a search form

	<?php
	global $wp;
	$urlquery = $wp->request;
	$urlquery = preg_replace("/(\.*)(html\|htm\|php)$/","",$urlquery);
	$parts = explode('/', $urlquery);
	$keyword = end($parts);

	echo 'Mal sehen, ob es zum Thema "' . $keyword . '" Blogbeiträge gibt...';

	$query = new WP_Query( array( 's' => $keyword ) );

WordPress-Handbuch / listing-16-5.php

Created March 10, 2019 12:42

PHP/HTML code fragment to include Yoast SEO's breadcrumbs into any template (e. g. page.php or single.php)

	<?php
	if ( function_exists('yoast_breadcrumb') ) {
	yoast_breadcrumb( '<p id="breadcrumbs">','</p>' );
	}
	?>

WordPress-Handbuch / listing-17-1.sh

Created March 11, 2019 09:46

Four WP-CLI commands to install and test the tool, and to test the checksums of the WordPress core and all plugins

	curl -O https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar

	php wp-cli.phar --info

	php wp-cli.phar core verify-checksums

	php wp-cli.phar plugin verify-checksums --all

WordPress-Handbuch / listing-17-2.php

Created March 11, 2019 12:55

Removes WordPress 5 RPC service itself and the <link> from the HTML header

	add_filter( 'xmlrpc_enabled', '__return_false' );
	remove_action('wp_head', 'rsd_link');

WordPress-Handbuch / listing-17-3.htaccess

Created March 11, 2019 12:57

Disallow XMLRPC call in WordPress 5 by denying access through .htaccess configuration

WordPress-Handbuch / listing-18-2.php

Last active July 30, 2020 15:41

WordPress hook to activate a basic maintenance mode showing a message for everybody but the administrator

	function wh_maintenance_mode() {
	if ( !is_user_logged_in() \|\| !current_user_can('administrator') ) {
	wp_die( 'Dritte Variante einer Wartungsseite', 'Wartung!', array( 'response' => '503'));
	}
	}
	add_action( 'get_header', 'wh_maintenance_mode' );

WordPress-Handbuch / listing-18-3.php

Last active April 10, 2019 12:38

Adding a simple shortcode for a new HTML bold italics tag through WordPress' hook mechanism

	function wh_shortcode_boldanditalics( $attributes, $content ) {
	// Hier kann beliebiger PHP-Code ausgeführt werden
	return '<b><i>' . $content . '</i></b>';
	}
	add_shortcode( 'fettkursiv', 'wh_shortcode_boldanditalics' );

WordPress-Handbuch / listing-18-4.php

Last active May 6, 2021 23:42

Parsing all WordPress post and page text, link all @ and # words to Instgram tags and profiles

	function wh_add_social_links( $content ) {
	$content = preg_replace( '/([^a-zA-Z0-9-_&])@([0-9a-zA-Z_]+)/', "$1<a href=\"https://www.instagram.com/$2/\" target=\"_blank\">@$2</a>", $content );
	$content = preg_replace( '/([^a-zA-Z0-9-_&])#([0-9a-zA-Z_]+)/', "$1<a href=\"https://www.instagram.com/explore/tags/$2/\" target=\"_blank\">#$2</a>", $content );
	return $content;
	}
	add_filter( 'the_content', 'wh_add_social_links' );
	add_filter( 'comment_text', 'wh_add_social_links' );