wpsnoop Fatal error: Cannot redeclare register_settings()

If you are dealing with a WordPress issue where a PHP Function register_settings() was already declared it is most likely due to a plugin/theme conflict.

wpsnoop scanned and analyzed over 100,000 WordPress plugins and themes to find and locate potential conflicts including functions that share the same name.

This page has information on the 28 places where that function is declared and used in WordPress plugins and themes.

Note: Our database currently only taps into the free themes and plugins available in the publicly available WordPress plugins and themes, if your site uses paid plugins, themes or custom code there may be additional conflicts.

Our database has uncovered 28 different instances of potential conflicts where different plugins or themes share the function name.

Examples of this error include:

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/cloud-image-gallery/cloudimagegallery.php:130)

This file is part of the WordPress plugin Cloud Image gallery and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/by-martin-maps/by-martin-maps.php:90)

This file is part of the WordPress plugin By-Martin Maps and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/treerating-customer-reviews-and-ratings/treerating-admin.php:5)

This file is part of the WordPress plugin Treerating and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/tweetpaste-embed/functions.php:185)

This file is part of the WordPress plugin TweetPaste Embed and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/interact-do-conversation-and-chat-ui/includes/class-interact-do-ui.php:159)

This file is part of the WordPress plugin Interact.do Conversation and Chat UI and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/themes/elisium/options/elisium-options.php:35)

This file is part of the WordPress theme Elisium and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/single-mailchimp/admin/register-admin.php:17)

This file is part of the WordPress plugin Single Mailchimp and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/wp-mortgagecalculator/wp-mortgagecalculator.php:103)

This file is part of the WordPress plugin WP MortgageCalculator and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/videodesk/videodesk_plugin.php:55)

This file is part of the WordPress plugin VideoDesk plugin and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/google-map-tab/google-map-tab.php:42)

This file is part of the WordPress plugin Google Map Tab and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/themes/aggiornare/functions/aggiornare-menu.php:14)

This file is part of the WordPress theme Aggiornare and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/handsup/handsUP.php:352)

This file is part of the WordPress plugin handsUP! and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/themes/wordsmith-anvil/functions/anvil-options.php:67)

This file is part of the WordPress theme Wordsmith Anvil and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/sketchfab-viewer/sketchfab-viewer.php:75)

This file is part of the WordPress plugin Sketchfab Viewer and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/word-linker/word-linker.php:45)

This file is part of the WordPress plugin Word-Linker and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/evercookie/evercookie.php:102)

This file is part of the WordPress plugin Evercookie and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/quickleads-re/twitterleads.php:19)

This file is part of the WordPress plugin QuickLeads RE and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/wp-telegram-sharing/includes/plugin.php:40)

This file is part of the WordPress plugin WP Telegram Sharing and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/themes/sonar/admin/sonar-options.php:33)

This file is part of the WordPress theme Sonar and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/geolocation-plus/geolocation.php:555)

This file is part of the WordPress plugin Geolocation Plus and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/cleanbook/admin/settings.php:48)

This file is part of the WordPress plugin Cleanbook and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/wordpress-hebrew-date/heb_date.php:193)

This file is part of the WordPress plugin Wordpress Hebrew Date and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/creww/creww.php:47)

This file is part of the WordPress plugin Creww and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/themes/simply-works-core/assets/swc_theme_options.php:25)

This file is part of the WordPress theme Simply Works Core and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/jellynote-viewer/jellynote-viewer.php:83)

This file is part of the WordPress plugin Jellynote Viewer and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/documentation-contents/options.php:43)

This file is part of the WordPress plugin Documentation Contents and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/themes/admired/admin/admired-options.php:40)

This file is part of the WordPress theme Admired and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare register_settings() (previously declared in wp-content/plugins/xapo/xapo-wordpress.php:112)

This file is part of the WordPress plugin Xapo and could be interacting with another theme or plugin and causing a fatal error.

The error occurs because two (or more) plugins that you are using are both trying to declare a function with the same name.