HI,我是一个PHP新手，今天一个问题折腾了一上午，请大家帮我看一下，万分感谢
PHP code
这是来自PHP和 MySQL web开发（第四版）中的一段代码。
我想问的是为什么最后总是输出An error has occurred.The item was not added
而且插入结果$result = -1
请大家指点一下
------解决方案--------------------
$query = "insert into books values ('$isbn', '$author', '$title', '$price')";
echo $query;
$result = $db->query($query) or die($db->error);
Book-O-Rama Book Entry Results Book-O-Rama Book Entry Result
"."Please go back and try again."; exit; } if ( !get_magic_quotes_gpc() ) { $isbn = addslashes($isbn); $author = addslashes($author); $title = addslashes($title); $price = doubleval($price); } @ $db = new mysqli('localhost', 'bookorama', 'bookorama123', 'books'); if ( mysqli_connect_errno() ) { echo "Error: Could not connect to database. Please try again later."; exit; } $query = "insert into books values ('$isbn', '$author', '$title', '$price')or die(mysql_error())";; echo $query; $result = $db->query($query); if ( $result ) { echo mysqli_affected_rows." book inserted into database."; } else { echo mysql_errno()."".mysql_error(); echo "An error has occurred.The item was not added."; } $db->close(); ?>