wpsnoop Function show_cm_metabox() conflicts found in 2 plugins

A php function called show_cm_metabox() is used in 2 wordpress plugins/themes and could produce a potential conflict if the wrong combination of themes and plugins is used on your site.

To prevent this from happening developers are encouraged to use namespaces and scopes that isolate their functions from colliding with other functions but this is not always done correctly.

We hope this reference helps you to find PHP Fatal error: Cannot redeclare show_cm_metabox()

The following 2 plugins register a function called show_cm_metabox():

Plugin
Contact Form 7 Campaign Monitor Extension
Contact Form 7 - Campaign Monitor Addon