PHP? ???? ?????? ???? ???? ?? ??? ?? ?? ???? ?????.
?? ???? ???? ?? ??????? yx_book??? ???? ????
?? ??? ?????.
id: ???? ??? int?? ?? ?? ?????.
name: ? ??, ??? varchar, ??? 20???.
price: ??, ???(4,2) ??, ??? ?? ???? ??? ??? ?????.
10?? ?? ?? ??? 10??(m,d)???.
1. M? ?? ?? ??(???)???. ??? 1~65???(?? MySQL ????? ???? ??? 1~254????).
? ? ? ? ? 2. D? ??? ?? ???(???)???. ??? 0~30??? M? ??? ? ????.
uploadtime: ?? ??, ??? datetime???.
type: ?? ??, ??? varchar, ??? 10???.
total: ? ?, ??? int, ??? 50???.
leave_number: ?? ??? ?? ? ?, ??? int, ??? 10???.
<?php $SQL = " CREATE TABLE IF NOT EXISTS `yx_books` ( `id` int(10) NOT NULL AUTO_INCREMENT, `name` varchar(20) CHARACTER SET utf8 NOT NULL, `price` decimal(4,2) NOT NULL, `uploadtime` datetime NOT NULL, `type` varchar(10) CHARACTER SET utf8 NOT NULL, `total` int(50) DEFAULT NULL, `leave_number` int(10) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_bin AUTO_INCREMENT=42 "; ?>
lend
?? ??? ?????.
id: ???? ??? int?? ?? ?? ?????.
book_id: ? ?? ID, ??? int???.
book_title: ??? varchar, ??? 100???.
lend_time: ?? ??, ??? datetime???.
user_id: ??? ID, ??? int
<?php $SQL = " CREATE TABLE IF NOT EXISTS `lend` ( `id` int(10) NOT NULL AUTO_INCREMENT, `book_id` int(10) NOT NULL, `book_title` varchar(100) CHARACTER SET utf8 NOT NULL, `lend_time` datetime NOT NULL, `user_id` int(10) NOT NULL, PRIMARY KEY (`id`,`user_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin AUTO_INCREMENT=85 "; ?>
?? phpMyAdmin?? ?? ??? ?? ????.