final public static function setError (string $errorMessage=NULL) : bool
	{
		static::$error = "";
		if (!static::hasValue($errorMessage)) return FALSE;
		static::$error = "Check the following field(s) ".stripComma($errorMessage)." and try again.";
		return TRUE;
	}
final public static function setError (string $errorMessage=NULL) : bool
	{
		static::$error = "";
		if (!static::hasValue($errorMessage)) return FALSE;
		static::$error = "Check the following field(s) ".stripComma($errorMessage)." and try again.";
		return TRUE;
	}
final public static function setError ( string $ errorMessage = NULL ) : bool { static :: $ error = "" ; if ( ! static :: hasValue ( $ errorMessage ) ) return FALSE ; static :: $ error = "Check the following field(s) " . stripComma ( $ errorMessage ) . " and try again." ; return TRUE ; }
Set error.
@param string $errorMessage
@return bool
Set error .