rnp_supported_features
  Get supported features in JSON format
  
 
  Description
  
   stringfalse rnp_supported_features(string $type)
  
  
 
  Parameters
  
   
    - 
type
- 
     
      See RNP_FEATURE_* constants for supported values.
      
 
 
  Return Values
  
   String containing JSON formatted array of supported algorithms, curves, etc or false on failure.