Exception::__construct Construct the exception &reftitle.description; public Exception::__construct stringmessage"" intcode0 Throwablenullprevious&null; Constructs the Exception. &reftitle.parameters; message The Exception message to throw. code The Exception code. previous The previous exception used for the exception chaining. Calling the constructor of class Exception from a subclass ignores the default arguments, if the properties $code and $message are already set. &reftitle.notes; The message is NOT binary safe.