Title: 4zero4 Author: Fabio Moro Published: 7 maart 2019 Last modified: 4 juni 2026 --- Plugins zoeken ![](https://s.w.org/plugins/geopattern-icon/4zero4.svg) # 4zero4 Door [Fabio Moro](https://profiles.wordpress.org/devfabio/) [Download](https://downloads.wordpress.org/plugin/4zero4.1.2.zip) * [Details](https://nl-be.wordpress.org/plugins/4zero4/#description) * [Beoordelingen](https://nl-be.wordpress.org/plugins/4zero4/#reviews) * [Installatie](https://nl-be.wordpress.org/plugins/4zero4/#installation) * [Ontwikkeling](https://nl-be.wordpress.org/plugins/4zero4/#developers) [Ondersteuning](https://wordpress.org/support/plugin/4zero4/) ## Beschrijving 4zero4 makes your 404 pages useful. When a visitor reaches a URL that no longer exists, the plugin builds a search query from the requested address and redirects the visitor to your site’s search results, so they land on relevant content instead of an empty error page. For example, a request for `/my-old-product-name/` that no longer resolves is turned into a search for “my old product name”. Key points: * **Zero configuration.** Activate it and it works. * **Temporary redirect (302).** The original URL may become valid again, so the redirect is never cached as permanently moved. * **Front-end only.** It never interferes with the admin area, feeds or the REST API, and only acts on normal GET page views. * **No external services.** The plugin does not send any data anywhere and does not use tracking or analytics. #### Developer hooks The behaviour can be customised with filters: * `p4zero4_search_terms` — change (or clear, to skip) the terms extracted from the URL. * `p4zero4_redirect_url` — change (or clear, to cancel) the destination URL. * `p4zero4_redirect_status` — change the HTTP status code (default `302`). ## Installatie 1. Upload the `4zero4` folder to `/wp-content/plugins/`, or install the plugin from the Plugins screen in WordPress. 2. Activate the plugin through the “Plugins” menu in WordPress. 3. That’s it — there are no settings. Any 404 will now redirect to a matching site search. ## FAQ ### Does the plugin have a settings page? No. It works out of the box with no configuration. ### Why am I redirected with a 302 and not a 301? A 404 is, by definition, temporary: the page might be restored later. A permanent 301 redirect would be cached by browsers and search engines and would be hard to undo. You can change the status code with the `p4zero4_redirect_status` filter. ### Can I customise the search terms or the destination? Yes. Use the `p4zero4_search_terms`, `p4zero4_redirect_url` and p4zero4_redirect_status filters described in the Description. ### Does the plugin send any data to external services? No. It performs a local redirect on your own site and contacts no third party. ## Beoordelingen Er zijn geen beoordelingen voor deze plugin. ## Bijdragers & ontwikkelaars “4zero4” is open source software. De volgende personen hebben bijgedragen aan deze plugin. Bijdragers * [ Fabio Moro ](https://profiles.wordpress.org/devfabio/) “4zero4” is vertaald in 1 taal. Dank voor [de vertalers](https://translate.wordpress.org/projects/wp-plugins/4zero4/contributors) voor hun bijdragen. [Vertaal “4zero4” naar jouw taal.](https://translate.wordpress.org/projects/wp-plugins/4zero4) ### Interesse in de ontwikkeling? [Bekijk de code](https://plugins.trac.wordpress.org/browser/4zero4/), haal de [SVN repository](https://plugins.svn.wordpress.org/4zero4/) op, of abonneer je op het [ontwikkellog](https://plugins.trac.wordpress.org/log/4zero4/) via [RSS](https://plugins.trac.wordpress.org/log/4zero4/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.2 * Security: the requested URL is now read, unslashed and sanitised safely instead of using a raw server variable. * Redirects now use `wp_safe_redirect()` with a temporary 302 status instead of a raw permanent 301 header. * Switched to the `template_redirect` hook and added guards for admin, feeds, REST and non-GET requests. * Added a guard against direct file access (ABSPATH check). * Added the `p4zero4_search_terms`, `p4zero4_redirect_url` and p4zero4_redirect_status filters. * Completed the plugin header (License, Text Domain, Requires at least, Requires PHP). * Rewrote the readme in English with full sections; fixed the Stable tag to match the plugin version. #### 1.1 * Previous public release. ## Meta * Versie **1.2** * Laatst bijgewerkt: **2 weken geleden** * Actieve installaties: **Minder dan 10** * WordPress versie ** 6.5 of nieuwer ** * Getest t/m **7.0** * PHP versie ** 7.4 of nieuwer ** * Talen * [Dutch (Belgium)](https://nl-be.wordpress.org/plugins/4zero4/) en [English (US)](https://wordpress.org/plugins/4zero4/). * [Vertaal in jouw taal](https://translate.wordpress.org/projects/wp-plugins/4zero4) * Tags * [404](https://nl-be.wordpress.org/plugins/tags/404/)[error page](https://nl-be.wordpress.org/plugins/tags/error-page/) [redirect](https://nl-be.wordpress.org/plugins/tags/redirect/)[search](https://nl-be.wordpress.org/plugins/tags/search/) * [Geavanceerde weergave](https://nl-be.wordpress.org/plugins/4zero4/advanced/) ## Beoordelingen Er zijn nog geen beoordelingen ingediend. [Your review](https://wordpress.org/support/plugin/4zero4/reviews/#new-post) [Bekijk alle beoordelingen](https://wordpress.org/support/plugin/4zero4/reviews/) ## Bijdragers * [ Fabio Moro ](https://profiles.wordpress.org/devfabio/) ## Ondersteuning Iets te melden? Hulp nodig? [Het supportforum bekijken](https://wordpress.org/support/plugin/4zero4/)