wpsnoop Fatal error: Cannot redeclare geshi_highlight()

If you are dealing with a WordPress issue where a PHP Function geshi_highlight() 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 geshi_highlight() (previously declared in wp-content/plugins/wp-hatena-notation/lib/geshi/geshi.php:4758)

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

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/sl-tools/geshi/geshi.php:4639)

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

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/wp-code/geshi/geshi.php:4738)

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

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/wp-codebox/geshi/geshi.php:4638)

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

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/igsyntax-hiliter/classes/geshi.php:4758)

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

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/wp-synhighlight/geshi/geshi.php:4627)

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

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/wp-syntax/geshi/geshi.php:4773)

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

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/plugeshin/GeSHi-1.0.8.10/geshi/geshi.php:4738)

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

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/ajaxcoderender/geshi.php:4548)

This file is part of the WordPress plugin AjaxCodeRender(Ajax代码高亮器) and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/pimp-my-snippet/geshi/geshi.php:4758)

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

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/source-code-syntax-highlighting-plugin-for-wordpress/geshi.php:2899)

This file is part of the WordPress plugin Dean's Code Highlighter and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/geshi-source-colorer/external/geshi.php:4758)

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

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/geshi-syntax-highlighting-shortcode/geshi/geshi.php:4627)

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

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/blogtext/thirdparty/geshi/geshi.php:4722)

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

PHP Fatal error: Cannot redeclare geshi_highlight() (previously declared in wp-content/plugins/devformatter/geshi/geshi.php:4758)

This file is part of the WordPress plugin Developer Formatter 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.