php - 无法将内容添加到数据库

Question

这是基于 O'Reilly 书籍《学习 PHP、MySQL、JavaScript 和 CSS，第二版》中的示例。

我无法通过界面向数据库添加任何记录。每当我尝试时，无论我输入什么，我都会收到完全相同的错误:

column count doesn't match value count at row 1

如果我连续两次点击“添加记录”按钮而没有退出中间的页面，程序就会开始从数据库中删除记录。

<?php // sqltest.php

// Note: This example is different to the one in the book. It has
//       been amended to work correctly when deleting entries.

require_once 'login.php';
$db_server = mysql_connect($db_hostname, $db_username, $db_password);

if (!$db_server) die("Unable to connect to MySQL: " . mysql_error());

mysql_select_db($db_database, $db_server)
    or die("Unable to select database: " . mysql_error());

if (isset($_POST['delete']) && isset($_POST['isbn']))
{
    $isbn  = get_post('isbn');
    $query = "DELETE FROM classics WHERE isbn='$isbn'";

    if (!mysql_query($query, $db_server))   
        echo "DELETE failed: $query<br />" .
        mysql_error() . "<br /><br />";
}

if (isset($_POST['author']) &&
    isset($_POST['title']) &&
    isset($_POST['category']) &&
    isset($_POST['year']) &&
    isset($_POST['isbn']))
{
    $author   = get_post('author');
    $title    = get_post('title');
    $category = get_post('category');
    $year     = get_post('year');
    $isbn     = get_post('isbn');

    $query = "INSERT INTO classics VALUES" .
        "('$author', '$title', '$category', '$year', '$isbn')";

    if (!mysql_query($query, $db_server))
        echo "INSERT failed: $query<br />" .
        mysql_error() . "<br /><br />";
}

echo <<<_END
<form action="sqltest.php" method="post"><pre>
  Author <input type="text" name="author" />
   Title <input type="text" name="title" />
Category <input type="text" name="category" />
    Year <input type="text" name="year" />
    ISBN <input type="text" name="isbn" />
         <input type="submit" value="ADD RECORD" />
</pre></form>
_END;

$query = "SELECT * FROM classics";
$result = mysql_query($query);

if (!$result) die ("Database access failed: " . mysql_error());
$rows = mysql_num_rows($result);

for ($j = 0 ; $j < $rows ; ++$j)
{
    $row = mysql_fetch_row($result);
    echo <<<_END
<pre>
  Author $row[0]
   Title $row[1]
Category $row[2]
    Year $row[3]
    ISBN $row[4]
</pre>
<form action="sqltest.php" method="post">
<input type="hidden" name="delete" value="yes" />
<input type="hidden" name="isbn" value="$row[4]" />
<input type="submit" value="DELETE RECORD" /></form>
_END;
}

mysql_close($db_server);

function get_post($var)
{
    return mysql_real_escape_string($_POST[$var]);
}
?>

这是sql文件

-- MySQL dump 10.13  Distrib 5.1.50, for Win32 (ia32)
--
-- Host: localhost    Database: 
-- ------------------------------------------------------
-- Server version   5.1.50-community

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

--
-- Current Database: `publications`
--

CREATE DATABASE /*!32312 IF NOT EXISTS*/ `publications` /*!40100 DEFAULT CHARACTER SET latin1 */;

USE `publications`;

--
-- Table structure for table `accounts`
--

DROP TABLE IF EXISTS `accounts`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `accounts` (
  `number` int(11) NOT NULL DEFAULT '0',
  `balance` float DEFAULT NULL,
  PRIMARY KEY (`number`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `accounts`
--

LOCK TABLES `accounts` WRITE;
/*!40000 ALTER TABLE `accounts` DISABLE KEYS */;
INSERT INTO `accounts` VALUES (12345,1050.61),(67890,140);
/*!40000 ALTER TABLE `accounts` ENABLE KEYS */;
UNLOCK TABLES;

--
-- Table structure for table `classics`
--

DROP TABLE IF EXISTS `classics`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `classics` (
  `author` varchar(128) DEFAULT NULL,
  `title` varchar(128) DEFAULT NULL,
  `category` varchar(16) DEFAULT NULL,
  `year` smallint(6) DEFAULT NULL,
  `isbn` char(13) NOT NULL DEFAULT '',
  PRIMARY KEY (`isbn`),
  KEY `author` (`author`(20)),
  KEY `title` (`title`(20)),
  KEY `category` (`category`(4)),
  KEY `year` (`year`),
  FULLTEXT KEY `author_2` (`author`,`title`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `classics`
--

LOCK TABLES `classics` WRITE;
/*!40000 ALTER TABLE `classics` DISABLE KEYS */;
INSERT INTO `classics` VALUES ('Mark Twain (Samuel Langhorne Clemens)','The Adventures of Tom Sawyer','Classic Fiction',1876,'9781598184891'),('Jane Austen','Pride and Prejudice','Classic Fiction',1811,'9780582506206'),('Charles Darwin','The Origin of the Species','Classic Fiction',1856,'9780517123201'),('Charles Dickens','The Old Curiosity Shop','Classic Fiction',1841,'9780099533474'),('William Shakespear','Romeo and Juliet','Play',1594,'9780192814968');
/*!40000 ALTER TABLE `classics` ENABLE KEYS */;
UNLOCK TABLES;

--
-- Table structure for table `classics52`
--

DROP TABLE IF EXISTS `classics52`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `classics52` (
  `author` varchar(128) DEFAULT NULL,
  `title` varchar(128) DEFAULT NULL,
  `category` varchar(16) DEFAULT NULL,
  `year` smallint(6) DEFAULT NULL,
  `isbn` char(13) NOT NULL DEFAULT '',
  PRIMARY KEY (`isbn`),
  KEY `author` (`author`(20)),
  KEY `title` (`title`(20)),
  KEY `category` (`category`(4)),
  KEY `year` (`year`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `classics52`
--

LOCK TABLES `classics52` WRITE;
/*!40000 ALTER TABLE `classics52` DISABLE KEYS */;
/*!40000 ALTER TABLE `classics52` ENABLE KEYS */;
UNLOCK TABLES;

--
-- Table structure for table `customers`
--

DROP TABLE IF EXISTS `customers`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `customers` (
  `name` varchar(128) DEFAULT NULL,
  `isbn` varchar(128) NOT NULL DEFAULT '',
  PRIMARY KEY (`isbn`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `customers`
--

LOCK TABLES `customers` WRITE;
/*!40000 ALTER TABLE `customers` DISABLE KEYS */;
INSERT INTO `customers` VALUES ('Joe Bloggs','9780099533474'),('Mary Smith','9780582506206'),('Jack Wilson','9780517123201');
/*!40000 ALTER TABLE `customers` ENABLE KEYS */;
UNLOCK TABLES;

--
-- Current Database: `test`
--

CREATE DATABASE /*!32312 IF NOT EXISTS*/ `test` /*!40100 DEFAULT CHARACTER SET latin1 */;

USE `test`;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

-- Dump completed on 2012-12-26 18:43:24

我的 SQL 数据库本身是否困惑？如果是这样的话，它怎么会改变一个独立程序的功能呢？如果不是，是什么导致了我的错误？

Answer 1

根据您的经典表检查您的插入:INSERT INTO classics VALUES"。
"('$author', '$title', '$category', '$year', '$isbn')

如果您没有在插入语句中指定列，那么您的值必须与表中的列数匹配。

如果您将列命名为类似于变量的名称，这可能会起作用。插入经典(作者、标题、类别、年份、isbn)值“。
"('$author', '$title', '$category', '$year', '$isbn')