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404 Solution 3.3.7

Does 404 Solution work with WordPress 6.9.4 and PHP 8.1.12? A smoke test was performed on 2026-03-20 23:12:28 UTC.

Summary

Pages 5

Plugins ‹ Test site — WordPress

Settings → 404 Solution

Test site – Just another WordPress site

Add Post ‹ Test site — WordPress

Add Page ‹ Test site — WordPress

Benchmark

URL	Load time			Memory usage
	Inactive	Active	Change	Inactive	Active	Change
/wp-admin/index.php	0.416 s	0.363 s	-0.053 s	3.78 MiB	4.12 MiB	+ 351.91 KiB
/wp-admin/edit.php	0.364 s	0.318 s	-0.046 s	3.78 MiB	4.18 MiB	+ 401.94 KiB
/wp-admin/post-new.php	0.857 s	1.088 s	+0.231 s	6.31 MiB	6.73 MiB	+ 431.85 KiB
/wp-admin/upload.php	0.675 s	0.453 s	-0.222 s	3.74 MiB	4.07 MiB	+ 334.4 KiB
/wp-admin/options-writing.php	0.328 s	0.304 s	-0.024 s	3.71 MiB	4.04 MiB	+ 338.39 KiB
/wp-admin/media-new.php	0.511 s	0.324 s	-0.187 s	3.7 MiB	4.04 MiB	+ 346.59 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.419 s	0.296 s	-0.123 s	3.72 MiB	4.07 MiB	+ 357.26 KiB
/wp-admin/post-new.php?post_type=page	0.703 s	0.631 s	-0.072 s	6.3 MiB	6.71 MiB	+ 425.34 KiB
/wp-admin/options-discussion.php	0.330 s	0.389 s	+0.059 s	3.71 MiB	4.04 MiB	+ 334.89 KiB
/wp-admin/edit-comments.php	0.322 s	0.335 s	+0.013 s	3.73 MiB	4.06 MiB	+ 334.39 KiB
/	0.281 s	0.193 s	-0.088 s	4.11 MiB	4.13 MiB	+ 22.44 KiB
Average	0.473 s	0.427 s	-0.047 s	4.24 MiB	4.56 MiB	+ 334.49 KiB

Code Statistics

Note: Third-party libraries and minified JS/CSS files are excluded from these statistics where possible, so the numbers you see here may be lower than those reported by other tools.

Language		%	Lines of code	Comment lines	Files
	PHP	41.8%	22,730	7,612	78
	PO File	39.4%	21,409	2,433	13
	CSS	6.8%	3,710	370	4
	JavaScript	5.2%	2,844	606	18
	Markdown	3.1%	1,665	0	2
	HTML	2.5%	1,342	38	40
	SQL	1.1%	576	128	38
	JSON	0.1%	45	0	1
Total			54,321	11,187	194

PHP Code Analysis | More results »

Additions

Things that the plugin adds to the site. This section is not intended to be comprehensive. The test tool only looks for a few specific types of added content.

Database Tables 7

• wp_abj404_logsv2
• wp_abj404_lookup
• wp_abj404_ngram_cache
• wp_abj404_permalink_cache
• wp_abj404_redirects
• wp_abj404_spelling_cache
• wp_abj404_view_cache

Options wp_options 3

• abj404_installed_time
• abj404_ngram_rebuild_offset
• abj404_settings

Meta Boxes

{
    "post": {
        "abj404_redirect_meta_box": {
            "title": "404 Solution",
            "context": "side"
        }
    },
    "page": {
        "abj404_redirect_meta_box": {
            "title": "404 Solution",
            "context": "side"
        }
    },
    "attachment": {
        "abj404_redirect_meta_box": {
            "title": "404 Solution",
            "context": "side"
        }
    }
}

PHP Error Log 15 lines

[20-Mar-2026 23:12:47 UTC] WordPress database error Table 'wordpress.wp_abj404_lookup' doesn't exist for query 
/* ------------------ /wp-content/plugins/404-solution/includes/sql/correctLookupTableIssue.sql BEGIN ----- */ 

delete from wp_abj404_lookup
where lkup_value in (
    select lkup_value from (
	    SELECT DISTINCT lkup_value
	    FROM wp_abj404_lookup
	    group by lkup_value
	    having count(lkup_value) > 1
    ) a
)

/* ------------------ /wp-content/plugins/404-solution/includes/sql/correctLookupTableIssue.sql END ----- */ 
 made by activate_plugin, plugin_sandbox_scrape, include_once('/plugins/404-solution/404-solution.php'), require_once('/plugins/404-solution/includes/Loader.php'), ABJ_404_Solution_SpellChecker::init, ABJ_404_Solution_SpellChecker::getInstance, ABJ_404_Solution_ServiceContainer->get, {closure}, ABJ_404_Solution_SpellChecker->__construct, ABJ_404_Solution_PluginLogic->getOptions, ABJ_404_Solution_PluginLogic->updateToNewVersion, ABJ_404_Solution_PluginLogic->updateToNewVersionAction, ABJ_404_Solution_DatabaseUpgradesEtc->createDatabaseTables, ABJ_404_Solution_DatabaseUpgradesEtc->reallyCreateDatabaseTables, ABJ_404_Solution_DatabaseUpgradesEtc->correctIssuesBefore, ABJ_404_Solution_DataAccess->correctDuplicateLookupValues, ABJ_404_Solution_DataAccess->queryAndGetResults

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