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404 Solution 3.2.0

Does 404 Solution work with WordPress 6.9.1 and PHP 8.1.12? A smoke test was performed on 2026-02-25 15:47:01 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	0.504 s	0.346 s	-0.158 s	3.78 MiB	4.04 MiB	+ 274.99 KiB
/wp-admin/edit.php	0.347 s	0.311 s	-0.036 s	3.78 MiB	4.1 MiB	+ 325.61 KiB
/wp-admin/post-new.php	0.844 s	1.049 s	+0.205 s	6.31 MiB	6.65 MiB	+ 349.16 KiB
/wp-admin/upload.php	0.627 s	0.455 s	-0.172 s	3.74 MiB	3.99 MiB	+ 257.45 KiB
/wp-admin/options-writing.php	0.330 s	0.286 s	-0.044 s	3.71 MiB	3.97 MiB	+ 261.44 KiB
/wp-admin/media-new.php	0.475 s	0.308 s	-0.167 s	3.7 MiB	3.97 MiB	+ 269.63 KiB
/wp-admin/edit-tags.php?taxonomy=category	0.449 s	0.279 s	-0.170 s	3.72 MiB	3.99 MiB	+ 280.3 KiB
/wp-admin/post-new.php?post_type=page	0.674 s	0.759 s	+0.085 s	6.3 MiB	6.63 MiB	+ 342.65 KiB
/wp-admin/options-discussion.php	0.324 s	0.389 s	+0.065 s	3.71 MiB	3.97 MiB	+ 257.94 KiB
/wp-admin/edit-comments.php	0.313 s	0.315 s	+0.002 s	3.73 MiB	3.99 MiB	+ 257.44 KiB
/	0.267 s	0.177 s	-0.090 s	4.11 MiB	4.13 MiB	+ 20.81 KiB
Average	0.469 s	0.425 s	-0.044 s	4.24 MiB	4.49 MiB	+ 263.4 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	40.6%	20,385	5,667	44
	PO File	39.7%	19,949	1,956	13
	CSS	7.3%	3,692	369	4
	JavaScript	5.5%	2,758	600	18
	Markdown	3.1%	1,569	0	2
	HTML	2.6%	1,318	38	40
	SQL	1.1%	544	125	35
	JSON	0.1%	45	0	1
Total			50,260	8,755	157

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 32 lines

[25-Feb-2026 15:47:20 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
[25-Feb-2026 15:47:20 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, ABJ_404_Solution_DataAccess->attemptMissingTableRepairAndRetry
[25-Feb-2026 15:47:20 UTC] WordPress database error Table 'wordpress.wp_abj404_spelling_cache' doesn't exist for query delete from wp_abj404_spelling_cache where matchdata is null or matchdata = '' 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_DatabaseUpgradesEtc->correctMatchData, ABJ_404_Solution_DataAccess->queryAndGetResults
[25-Feb-2026 15:47:21 UTC] WordPress database error Table 'wordpress.wp_abj404_spelling_cache' doesn't exist for query delete from wp_abj404_spelling_cache where matchdata is null or matchdata = '' 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_DatabaseUpgradesEtc->correctMatchData, ABJ_404_Solution_DataAccess->queryAndGetResults, ABJ_404_Solution_DataAccess->attemptMissingTableRepairAndRetry

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