wpsnoop Function calendar_wp_head() conflicts found in 3 plugins

A php function called calendar_wp_head() 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 calendar_wp_head()

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

Plugin
Lesson
Calendar
Calendar Plus