wpsnoop Fatal error: Cannot redeclare is_admin_page()

If you are dealing with a WordPress issue where a PHP Function is_admin_page() 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 15 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 15 different instances of potential conflicts where different plugins or themes share the function name.

Examples of this error include:

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/wpgplus/WPGPlus.php:38)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/themes/custom-community/includes/extras.php:218)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/tintin-quotes/tintin-quotes.php:34)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/yahoo-shortcuts/yahoo_shortcuts.php:35)

This file is part of the WordPress plugin Yahoo! Shortcuts (Beta) and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/post-to-twitter/post-to-twitter.php:32)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/wp-lijit-wijit/lijit.php:160)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/identica-tools/identica-tools.php:43)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/answerlinks/answerlink.php:52)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/wpbook/wpbook.php:46)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/link-harvest/link-harvest.php:69)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/facebook-commentstng/fbntng.php:15)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/wp-shortstat/wp-shortstat.php:12)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/csprites-for-wordpress/wp_csprites.php:252)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/delink-comment-author/delink-comment-author.php:27)

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

PHP Fatal error: Cannot redeclare is_admin_page() (previously declared in wp-content/plugins/nfcbc-seo-plugin-add-on/nfcbc-seo-plugin-add-on.php:36)

This file is part of the WordPress plugin NFCBC SEO Plugin Add-on 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.