Smart 404

Save your visitors from unhelpful 404 errors!

Instead of quickly giving up when a visitor reaches content that doesn’t exist, make an effort to guess what they were
after in the first place. This plugin will perform a search of your posts, pages, tags and categories, using keywords from the requested
URL. If there’s a match, redirect to that content instead of showing the error. If there’s more than one match, the
404 template can use some template tags to provide a list of suggestions to the visitor.

See the Smart 404 homepage for more information.

Template tags

smart404_has_suggestions

Returns true if there are some suggestions, false otherwise

smart404_get_suggestions

Retrieve an array of post objects for rendering manually.

smart404_suggestions

Draw a list of suggested posts.

Pass the parameter “list” to render suggestions as a list.

smart404_loop

Query posts for use in a Loop. Eg:

Note that the loop will not display pages correctly, as it is not built to support them. It is recommended that if you use
a loop like that above, do not enable searching of pages.

smart404_get_search_terms

Retrieve an array of search terms used to populate the suggestions list, for use with contextual highlighting, etc.

For support and latest source code, please visit https://github.com/leonstafford/smart-404

1. Unzip the package, and upload smart404 to the /wp-content/plugins/ directory
2. Activate the plugin through the ‘Plugins’ menu in WordPress
3. Place <?php smart404_suggestions() ?> in your 404 template to list suggested posts, or see ‘Template tags’ for more information.

0.6

• fix deprecation notice
• add GitHub repo as communications point
• update plugin’s WP readme file
• bump WP supported version

0.5

• Revised search algorithm

0.4.4

• Bugfix to avoid clobbering page search results when pages are prioritised over posts (Thanks to Mark Foxwell for the catch)

0.4.3

• More robust pattern matching – works with .php URL extensions, and works better with underscores.

0.4.2

• Removed errant debug statement

0.4.1

• Now actually fixed redirection bug, missed in 0.4

0.4

• Added prioritising of pages, posts, tags and categories for search
• Added a new template tag to retrieve search terms
• Fixed redirection bug (thanks Emil Janizek!)

0.3.5

• Don’t get confused by URL parameters
• Maintain GET parameters

0.3.4

• Slightly smarter post matching – now matches against post title, even if post slug differs

0.3.3

• Bugfix for when no replacement patterns are specified

0.3.2

• Better URL filtering to work with URLs including /trackback, /feed, etc

0.3.1

• Trim whitespace from search in order to obtain more results in some circumstances