wpsnoop Fatal error: Cannot redeclare my_action_callback()

If you are dealing with a WordPress issue where a PHP Function my_action_callback() 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 16 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 16 different instances of potential conflicts where different plugins or themes share the function name.

Examples of this error include:

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/feedburner-setting/feedBurner-feedSmith-extend.php:194)

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

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/contempo-reviews/ctpo-testimonials.php:803)

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

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/woocommerce-hss-extension-for-streaming-video/includes/add-download.php:186)

This file is part of the WordPress plugin WooCommerce HSS Extension for Streaming Video and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/shopsocially-referral-and-loyalty/shopsocially-referral-and-loyalty.php:635)

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

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/bookinglive/bookingLive.php:292)

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

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/franklyme/embed-config.php:14)

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

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/milwaukee-beer-society-beer-list/header.php:168)

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

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/campaigns-integrator/zoho-campaigns-integrator.php:260)

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

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/wordpress-easy-todo/wp_easy_todo.php:203)

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

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/couponsindemand/coupon.php:219)

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

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/custom-skins-for-contact-form-7/contact-form-7-custom-skins.php:190)

This file is part of the WordPress plugin Contact Form 7 Custom Skins and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/hierarchical-custom-fields/hierarchical-custom-fields.php:444)

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

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/cs-page-templates-info/cs_page_templates_info.php:136)

This file is part of the WordPress plugin Cleanscript - Page Templates Info and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/yay-images/yayimages.php:232)

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

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/ajax-filter-search/core/includes/functions.php:156)

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

PHP Fatal error: Cannot redeclare my_action_callback() (previously declared in wp-content/plugins/tpro3-payment-gateway-for-woocommerce/tpro3.php:2714)

This file is part of the WordPress plugin WooCommerce TPro3 Payment Gateway 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.