wpsnoop Fatal error: Cannot redeclare showmessage()

If you are dealing with a WordPress issue where a PHP Function showmessage() 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 14 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 14 different instances of potential conflicts where different plugins or themes share the function name.

Examples of this error include:

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/smugmug-responsive-slider/pyd-smugmug_slider.php:110)

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

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/video-list-manager/includes/message.php:12)

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

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/my-blog-guest/includes/register.php:98)

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

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/sitewide-message/sitewide-message.php:263)

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

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/hiyalife/plugins/hiyapublish.php:269)

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

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/youtube-gallery/hkYouTubeGallary.php:52)

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

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/271-update-to-quizzin-by-binny-v-a/wpframe.php:22)

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

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/woocommerce-upload-my-file/inc/umf-funct.php:17)

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

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/ivn-publish/ivn.php:809)

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

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/loginwall-for-wp-beta/loginwall.php:496)

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

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/warn-other-admins/woa.php:11)

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

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/google-analytics-y-la-ley-de-cookies/ObturecodeGA.php:170)

This file is part of the WordPress plugin Google Analytics y la ley de Cookies and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/wp-email-verify/true-email-checker.php:89)

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

PHP Fatal error: Cannot redeclare showmessage() (previously declared in wp-content/plugins/woocommerce-postnl-parcelware/inc/funct-basic.php:9)

This file is part of the WordPress plugin WooCommerce PostNL Parcelware 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.