CREATE TABLE `table`.`users` (
`id` INT(11) NOT NULL AUTO_INCREMENT,
`username` VARCHAR(50) NOT NULL,
`password` VARCHAR(50) NOT NULL,
`dir` VARCHAR(
according to the latest version of MySQL (phpMyAdmin), add a correct INDEX while choosing primary key. for example: id[int] INDEX 0 ,if id is your primary key and at the first index. Or,
For your problem try this one
CREATE TABLE `table`.`users` (
`id` INT(11) NOT NULL AUTO_INCREMENT,
`username` VARCHAR(50) NOT NULL,
`password` VARCHAR(50) NOT NULL,
`dir` VARCHAR(100) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE = MyISAM;