wpsnoop Fatal error: Cannot redeclare identify_modifier_markdown()

If you are dealing with a WordPress issue where a PHP Function identify_modifier_markdown() 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 12 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 12 different instances of potential conflicts where different plugins or themes share the function name.

Examples of this error include:

PHP Fatal error: Cannot redeclare identify_modifier_markdown() (previously declared in wp-content/plugins/wp-pde/main/php-markdown-1.0.1o/markdown.php:141)

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

PHP Fatal error: Cannot redeclare identify_modifier_markdown() (previously declared in wp-content/plugins/blog-in-blog/plugin-meta/markdown.php:165)

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

PHP Fatal error: Cannot redeclare identify_modifier_markdown() (previously declared in wp-content/plugins/wp-markdown/markdown-extra.php:70)

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

PHP Fatal error: Cannot redeclare identify_modifier_markdown() (previously declared in wp-content/plugins/barkdown/markdown.php:157)

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

PHP Fatal error: Cannot redeclare identify_modifier_markdown() (previously declared in wp-content/plugins/wp-markdown-live/vendor/brainsware/php-markdown-extra-extended/markdown.php:165)

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

PHP Fatal error: Cannot redeclare identify_modifier_markdown() (previously declared in wp-content/plugins/schemeable-sliding-panel/php-markdown-1.0.1o/markdown.php:141)

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

PHP Fatal error: Cannot redeclare identify_modifier_markdown() (previously declared in wp-content/plugins/mytory-markdown/markdown.php:172)

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

PHP Fatal error: Cannot redeclare identify_modifier_markdown() (previously declared in wp-content/plugins/markdown-for-p2/markdown-extra.php:156)

This file is part of the WordPress plugin Markdown for P2 and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare identify_modifier_markdown() (previously declared in wp-content/plugins/markdown-for-wordpress-and-bbpress/markdown.php:208)

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

PHP Fatal error: Cannot redeclare identify_modifier_markdown() (previously declared in wp-content/plugins/wp-plugin-update-server/lib/wp-update-server/includes/extension-meta/markdown.php:173)

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

PHP Fatal error: Cannot redeclare identify_modifier_markdown() (previously declared in wp-content/plugins/markdown-on-save/markdown-extra/markdown-extra.php:173)

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

PHP Fatal error: Cannot redeclare identify_modifier_markdown() (previously declared in wp-content/plugins/lead-generator-by-enchantier/includes/PHP_Markdown_1.0.1o/markdown.php:143)

This file is part of the WordPress plugin Générateur de leads - EnChantier 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.