Adding first steps into the plugin conflict notice
Add conflict check into a hook.
Separated plugin conflict class.
Add hook to check for plugin conflicts
Change the hook. First add current activated plugin to the active plugins list.
Remove exit
Add category search
new static is not allowed. using another solution
Putting the if-statement between the is_null check, because $classname isn't uses outside this is_null check
Doing singleton better :)
overriding the correct instance method
Merge pull request #1718 from Yoast/stories/AM/check_for_conflicting_plugins

check for conflicting open graph plugins [#80323722]