Código PHP:
<?php
$sql = "CREATE TABLE IF NOT EXISTS `mess_usuario` (
`id` int(10) NOT NULL AUTO_INCREMENT,
`username` varchar(20) NOT NULL,
`password` varchar(20) DEFAULT NULL,
`correo` varchar(50) DEFAULT NULL,
`rango` char(1) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1;";
mysql_query($sql,$link);
?>