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404 Solution 4.1.3

Does 404 Solution work with WordPress 6.9.4 and PHP 8.1.12? A smoke test was performed on 2026-04-17 20:55:18 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	0.517 s	0.375 s	-0.142 s	3.78 MiB	4.22 MiB	+ 455.72 KiB
/wp-admin/edit.php	0.464 s	0.339 s	-0.125 s	3.79 MiB	4.28 MiB	+ 505.75 KiB
/wp-admin/post-new.php	1.145 s	1.054 s	-0.091 s	6.31 MiB	6.91 MiB	+ 619.11 KiB
/wp-admin/upload.php	0.569 s	0.433 s	-0.136 s	3.74 MiB	4.17 MiB	+ 437.89 KiB
/wp-admin/options-writing.php	0.411 s	0.309 s	-0.102 s	3.72 MiB	4.15 MiB	+ 441.88 KiB
/wp-admin/media-new.php	0.628 s	0.341 s	-0.287 s	3.71 MiB	4.15 MiB	+ 450.08 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.424 s	0.309 s	-0.115 s	3.72 MiB	4.17 MiB	+ 460.75 KiB
/wp-admin/post-new.php?post_type=page	0.847 s	0.659 s	-0.188 s	6.3 MiB	6.89 MiB	+ 612.11 KiB
/wp-admin/options-discussion.php	0.437 s	0.425 s	-0.012 s	3.72 MiB	4.15 MiB	+ 438.38 KiB
/wp-admin/edit-comments.php	0.417 s	0.341 s	-0.076 s	3.74 MiB	4.17 MiB	+ 437.88 KiB
/	0.364 s	0.231 s	-0.133 s	4.12 MiB	4.19 MiB	+ 63.6 KiB
Average	0.566 s	0.438 s	-0.128 s	4.24 MiB	4.68 MiB	+ 447.56 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
	PO File	43.0%	29,380	2,666	13
	PHP	41.6%	28,436	9,627	93
	CSS	6.0%	4,130	388	4
	JavaScript	4.4%	2,986	551	19
	HTML	2.3%	1,573	43	45
	Markdown	1.7%	1,182	0	2
	SQL	0.9%	613	131	40
	JSON	0.1%	45	0	1
Total			68,345	13,406	217

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 9

• wp_abj404_engine_profiles
• wp_abj404_logsv2
• wp_abj404_lookup
• wp_abj404_ngram_cache
• wp_abj404_permalink_cache
• wp_abj404_redirect_conditions
• 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

[17-Apr-2026 20:55:41 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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