wpsnoop Function widget_calendar_upcoming() conflicts found in 3 plugins

A php function called widget_calendar_upcoming() is used in 3 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 widget_calendar_upcoming()

The following 3 plugins register a function called widget_calendar_upcoming():

Plugin
Lesson
Calendar
Calendar Plus