contains Placeholders
  Checks if the input text contains any registered placeholders following the pattern %{my-placeholder} as well as any placeholders following the pattern %{my-placeholder:my-parameter}. Though the placeholder does need to be registered with the plugin.
Return
true if the text returned with a match and false if it doesn't.
Since
2.0.0
Parameters
text
The text that will be matched to the patterns.