ReflectionFunctionAbstract::getExtension
  Gets extension info
  
 
  Description
  
   public ReflectionExtensionnull ReflectionFunctionAbstract::getExtension()
  
  
 
  Parameters
  This function has no parameters.
  
 
  Return Values
  
   The extension information, as a ReflectionExtension object,
   or null for user-defined functions.
  
  
 
  See Also
  
   
    -  ReflectionFunctionAbstract::getExtensionName