Gist 8996e99323835c6726c458f94a895281

100%

Gist 8996e99323835c6726c458f94a895281

✓ Published0🌍 Public

Last edited Apr 7, 2020

Created on Apr 7, 2020

This example demonstrates a WordPress redirect system that forces all incoming URLs to lowercase. It shows how a site can enforce consistent URL casing by intercepting requests before page rendering. The code uses the `template_redirect` action hook to check whether the requested URI differs from its lowercase version, and if so, issues a 301 redirect using PHP’s `header()` function. The redirect constructs the new location by combining the site’s home URL, the `HTTPS_HOST` server variable, and the lowercased request URI. This approach ensures search engines and users are permanently directed to canonical lowercase paths, preventing duplicate content issues.

AI-generated description

Similar vizzes

Loading thumbnail…

Gist a3008238e5a13ba6b6d46e0c53687342

This example demonstrates WordPress SEO canonical URL handling for paginated pages through a PHP snippet. It shows how to enforce the first page URL as the canonical link for all paginated views, overriding the default per-page canonical generated by Yoast SEO. The implementation uses the `wpseo_canonical` filter with a callback function, while conditionally applying it via `is_paged()` and registering it through `wpseo_head`. The code relies on WordPress core functions like `get_pagenum_link()` and the `add_filter()` API to modify SEO output.

KKopylovVitalik

64% match

Loading thumbnail…

Gist 08a85737c01bc51262bd481fbef6eabc

This example demonstrates a WordPress search behavior that automatically redirects to a single post when a search query returns exactly one result. The code uses WordPress hooks, specifically `add_action` with `template_redirect`, and checks the global `$wp_query` object to verify the post count. If the condition is met, it calls `wp_redirect()` with the permalink of that post and halts execution with `die`. The implementation relies on WordPress core APIs rather than external visualization libraries, showcasing a practical server-side logic pattern for improving search user experience.

KKopylovVitalik

62% match

Loading thumbnail…

Gist 367a00c4facccefe2f33a0ef0cd374eb

This example shows a WordPress site sending HTTP `Last-Modified` headers based on the most recent post modification time. For singular pages and archive views, it extracts `post_modified_gmt` from the current post or the first post in the loop, formats it as an RFC 2822 date, and sends it via PHP’s `header()` function. The code also checks `HTTP_IF_MODIFIED_SINCE` and returns a `304 Not Modified` status for logged-out visitors when the content has not changed, while skipping execution for admin or AJAX requests.

KKopylovVitalik

58% match

Loading thumbnail…

Gist 9a926ef0219e7b50d71a33ceae04c99e

This example demonstrates a WordPress content-cleaning routine that strips inline styling, removes font tags, and deletes empty HTML elements from posts. It shows how the `the_content` filter hook modifies page output for single posts and the homepage. The code uses the `add_filter` API with a custom `clean_post_content` function, applying regular expressions via `preg_replace` and a string translation with `strtr` to sanitize markup before rendering.

KKopylovVitalik

58% match

Loading thumbnail…

Gist c74189a31788f3b07d62c559357ffeef

This example shows a WordPress code snippet that restricts access to the WordPress REST API. It uses the `rest_authentication_errors` filter hook to deny requests from unauthenticated users, returning a `WP_Error` with a 401 status unless the request URI contains "contact-form-7". The code checks the global `$wp_json_basic_auth_error` variable and incorporates a custom authentication check using `is_user_logged_in()` and `strpos()` on the server request URI.

KKopylovVitalik

56% match

Loading thumbnail…

Gist 23705f481029d7e1cb22973540188d19

This snippet demonstrates a WordPress performance optimization technique by filtering the `style_loader_tag` hook to modify how stylesheet links are rendered. It shows the `add_rel_preload` function, which replaces standard `<link>` tags with preload directives that include an `onload` handler to swap `rel='preload'` to `rel='stylesheet'`, enabling asynchronous CSS loading. The code uses WordPress PHP APIs (`add_filter`, `is_admin`) and outputs a heredoc string with the HTML. It explicitly avoids altering output in the admin panel, targeting front-end performance only.

KKopylovVitalik

56% match

Loading thumbnail…

Gist bb286172022e9e29f5d0fba33df092f6

This example demonstrates a full-width WordPress page layout template, defining a PHP template for posts, pages, categories, and videos. The code sets a template name and restricts its use to specific post types. It uses standard WordPress template hierarchy and conditional logic, with the PHP file structure serving as the primary mechanism. The visualization here is the resulting web page layout, which relies on WordPress’s built-in template system rather than external charting or data libraries.

KKopylovVitalik

55% match

Loading thumbnail…

Gist 95caa5a3cc0b546ba00efcf8ed574a3d

This example demonstrates a WordPress navigation menu filter that removes cyclical links by replacing anchor tags with non-link spans. The code hooks into the `wp_nav_menu` filter and applies a PHP regular expression via `preg_replace` to match `<a>` elements containing `aria-current="page"` and convert them to `<span>` elements with the same attribute. This prevents the current page from being rendered as a clickable link, effectively eliminating self-referencing navigation entries. The implementation relies on WordPress's `add_filter` API and requires PHP's regex engine to identify and transform the markup.

KKopylovVitalik

55% match