WordPress-Handbuch

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

function wh_hide_login_errors(){
	return 'No.';
}
add_filter( 'login_errors', 'wh_hide_login_errors' );

WordPress-Handbuch

function wh_add_login_message( $message ) {
	return $message . '<h2>Sprich Freund und tritt ein.</h2>';
}
add_filter( 'login_message', 'wh_add_login_message' );

WordPress-Handbuch

function wh_custom_login_logocss() {
	echo '<style type="text/css">
	.login h1 a { background-image: url(/pfadunddateinamedeslogos.png); background-size: contain; width:315px; }
	</style>';
}
add_action( 'login_head', 'wh_custom_login_logocss' );

WordPress-Handbuch

function wh_add_various_mime_types( $mime_types ) {
	$mime_types['midi'] = 'audio/midi';
	$mime_types['psd'] = 'image/vnd.adobe.photoshop';
	return $mime_types;
}
add_filter( 'upload_mimes', 'wh_add_various_mime_types', 1, 1 );

WordPress-Handbuch

function wh_set_excerpt_length( $length ) {
	return 150;
}
add_filter( 'excerpt_length', 'wh_set_excerpt_length' );

WordPress-Handbuch

function wh_change_more_link() {
	return '<a class="more-link" href="' . get_permalink() . '">Hier weiterlesen...</a>';
}
add_filter( 'the_content_more_link', 'wh_change_more_link' );

WordPress-Handbuch

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' );

WordPress-Handbuch

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

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' );