(PHP 7 >= 7.4.0)
FFI::type — Creates an FFI\CType object from a C declaration
   This function creates and returns a FFI\CType object for the
   given string containing a C type declaration.
   If this method is called statically, it must only use predefined C type names (e.g.
   int, char, etc.); if the method is called as
   instance method, any type declared for the instance is allowed.
  
Returns the freshly created FFI\CType object.