$lookup – Fehler beu PHP-Versionswechsel

Hallo Gerd,

schnell wie immer 😉

Auch mit PHP 8.0 wird die Seite abgebrochen!

Fatal error Uncaught Error: Attempt to modify property "children" on null in /homepages/7/d292804320/htdocs/WordPress/wp-content/themes/briegerthochgeschurtz/functions.php:169Stack trace:

#0 /homepages/7/d292804320/htdocs/WordPress/wp-content/themes/briegerthochgeschurtz/modules/navigation.php(1): BH_Page::getTree()

#1 /homepages/7/d292804320/htdocs/WordPress/wp-includes/template.php(792): require(‚/homepages/7/d2…‘)

#2 /homepages/7/d292804320/htdocs/WordPress/wp-includes/template.php(725): load_template()

#3 /homepages/7/d292804320/htdocs/WordPress/wp-includes/general-template.php(206): locate_template()

#4 /homepages/7/d292804320/htdocs/WordPress/wp-content/themes/briegerthochgeschurtz/index.php(15): get_template_part()

#5 /homepages/7/d292804320/htdocs/WordPress/wp-includes/template-loader.php(106): include(‚/homepages/7/d2…‘)

#6 /homepages/7/d292804320/htdocs/WordPress/wp-blog-header.php(19): require_once(‚/homepages/7/d2…‘)

#7 /homepages/7/d292804320/htdocs/WordPress/index.php(17): require(‚/homepages/7/d2…‘)

#8 {main} thrown

LG sendet

Lynn

Hallo Bego Mario Garde,

vielen Dank für Deine Ausführung zu PHP 8, dass dort anders gehändelt wird.

Der Autor ist anscheinend nicht mehr greifbar 🙁
Hier der gesamte Code, in 169 ist die Stelle, wo abgebrochen wird.

<?php

// Theme setup
add_action( 'after_setup_theme', 'bh_setup' );

function bh_setup() {
	
	// hide admin bar
	add_filter( 'show_admin_bar', '__return_false' );

	// remove some default header stuff (@see: wp-includes/default-filters.php)
	remove_action( 'wp_head', 'feed_links',                      2     );
	remove_action( 'wp_head', 'feed_links_extra',                3     );
	remove_action( 'wp_head', 'rsd_link'                               );
	remove_action( 'wp_head', 'wlwmanifest_link'                       );
	remove_action( 'wp_head', 'wp_generator'                           );
	remove_action( 'wp_head', 'rel_canonical'                          );
    remove_action( 'wp_head', 'rsd_link');
    remove_action( 'wp_head', 'index_rel_link');
    remove_action( 'wp_head', 'parent_post_rel_link', 10, 0);
    remove_action( 'wp_head', 'start_post_rel_link', 10, 0);
    remove_action( 'wp_head', 'wp_shortlink_wp_head', 10, 0);
    remove_action( 'wp_head', 'wp_shortlink_header', 10, 0);
    remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head', 10, 0);

	// remove emoji stuff
	remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
	remove_action( 'wp_print_styles', 'print_emoji_styles' );

	// Post thumbnails
	add_theme_support( 'post-thumbnails' );
	
	// Add nav menu
	register_nav_menu( 'primary', __( 'Primary Menu', 'briegerthochgeschurtz' ) );
	register_nav_menu( 'secondary', __( 'Secondary Menu', 'briegerthochgeschurtz' ) );
	
	// Make the theme translation ready
	load_theme_textdomain( 'briegerthochgeschurtz', get_template_directory() . '/languages' );

    // register styles
    wp_enqueue_style( 'bh', get_template_directory_uri() . '/css/all.css' );
    // remove theme css from wp-admin
    add_action( 'admin_init', 'remove_local_css' );
	
	// Register and enqueue Javascript files
	// wp_enqueue_script( 'bh_jquery', get_template_directory_uri().'/javascript/jquery-3.1.1.min.js', array(), '', true );
    wp_enqueue_script( 'bh_custom', get_template_directory_uri().'/javascript/custom.js', array('jquery'), '', true );

    // remove xmlrpc
    add_filter( 'xmlrpc_enabled', '__return_false' );
    add_filter( 'wp_headers', 'bh_remove_x_pingback' );

    // enable woocommerce support
    add_theme_support( 'woocommerce' );
}

// remove xmlrpc
function bh_remove_x_pingback( $headers ) {
   unset( $headers['X-Pingback'] );
   return $headers;
}

// remove css from wp-admin
function remove_local_css() {
	wp_deregister_style( 'bh' );
}

function bh_sidebar() {
	register_sidebar( array(
		'name' => __( 'Sidebar', 'briegerthochgeschurtz' ),
		'id' => 'sidebar',
		'description' => '',
		'before_widget' => '<div class="sidebar-widget">',
		'after_widget' => '</div>',
		'before_title' => '<h2>',
		'after_title' => '</h2>'
		) 
	);
}
add_action( 'widgets_init', 'bh_sidebar' );

// add Events-Option Page
if( function_exists('acf_add_options_page') ) {
  acf_add_options_page(array(
        'page_title'    => 'Events',
        'menu_title'    => 'Events',
        'menu_slug'     => 'events',
    ));
}
// add Events-Select for pages
function acf_load_event_field_choices( $field ) {
    // reset choices
    $field['choices'] = array();
    // get events
    $choices = get_field('events', 'option');
    // loop through array and add to field 'choices'
    if( is_array($choices) ) { 
        $field['choices'][] = "";
        foreach( $choices as $choice ) {
            $field['choices'][ $choice['veranstaltung'] ] = $choice['veranstaltung'];
        }
    }
    return $field;
}
add_filter( 'acf/load_field/name=eventlink', 'acf_load_event_field_choices' );

// Navigation stuff
error_reporting(E_ERROR | E_PARSE);
class BH_Page {

    protected $data = array();
    public $parent = null;
    public $children = array();
    public function __construct(array $data) {
        $this->data = array(
            'ID' => $data['ID'],
            'title' => $data['title'],
            'url' => $data['url'],
            'current' => $data['current'],
            'hidden' => (in_array('hidden', (array) $data['classes'])),
            'target' => ($data['target']) ? ' target="' . $data['target'] . '"' : '',
        );
    }

    public function __get($key) {
        return $this->data[$key];
    }

    public function __set($key, $value) {
        $this->data[$key] = $value;
    }

    public static function getTree($name) {
        $locations = get_nav_menu_locations();

        if (array_key_exists($name, $locations) === false) {
            return;
        }

        $pages = wp_get_nav_menu_items($locations[$name]);

        _wp_menu_item_classes_by_context($pages); /* Adds [current] => 1 property */

        /**
         * Tree
         *
         * i.e. $treeRoot->children[2]->children[1]->title
         */
        // Create tree root (imaginary node)
        $treeRoot = new BH_Page(array(
            'ID' => 0,
            'title' => '__TREE_ROOT__',
            'url' => '',
            'current' => false
        ));

        // Build lookup table
        $lookup = array(
            0 => $treeRoot
        );

        foreach ($pages as $page) {
            $lookup[$page->ID] = new BH_Page($page->to_array());
        }

        // Build hirarchy (page has children)
       foreach ($pages as $page) {
            $lookup[$page->ID]->parent = $lookup[intval($page->menu_item_parent)];
            $lookup[intval($page->menu_item_parent)]->children[] = $lookup[$page->ID];
        }

        // Mark rootline as active
        $active = $treeRoot->findActive();
        if ($active !== null) {
            $active->setRootlineActive();
        }

        // Return tree root
        return $treeRoot;
    }

    public function setRootlineActive() {
        if ($this->parent === null) {
            return;
        }

        $this->parent->current = true;
        $this->parent->setRootlineActive();
    }

    public function findActive() {
        foreach ($this->children as $child) {
            if ($child->current) {
                return $child;
            }

            $return = $child->findActive();

            if ($return !== null) {
                return $return;
            }
        }

        return null;
    }


    public function hasVisibleChildren() {
        foreach ($this->children as $child) {
            if ($child->hidden === false) {
                return true;
            }
        }

        return false;
    }

}


?>

Ich danke Dir trotzdem 😉

Einen schönen Sonntagabend

Lynn