//mysql数据库的sql
CREATE TABLE user( id int(5) DEFAULT '0' NOT NULL AUTO_INCREMENT, name varchar(20), city varchar(20), postcode varchar(10),address varchar(100), password varchar(10), level tinyint(2) DEFAULT '0',right tinyint(2),email varchar(40), PRIMARY KEY (id), UNIQUE id (id));
INSERT INTO myuser VALUES (1,'王友','北京','100083','北京市海淀区学院路',111,0,0,'wangyou000@263.net');
INSERT INTO myuser VALUES (2,'金风','武汉','430071','武汉市武昌区水果湖',111,0,0,'jinfeng000@263.net');
INSERT INTO myuser VALUES (3,'常丽','襄樊','441021','襄樊市襄城区南街',111,0,0,'changli000@263.net');
1.查寻全部
<html>
<head>
<title> 查寻全部</title>
</head>
<body>
<h2 align=center>
下面是用户数据库的所有内容：
</h2>
<?
$db = MySQL_connect("localhost", "root");
MySQL_select_db("mysite",$db);
$result = MySQL_query("SELECT * FROM user",$db);
echo "<table border=1>/n";
echo "<tr><td>id</td><td>姓名</td>";
echo "<td>城市</td><td>邮编</td>";
echo "<td>住 址</td><td>等级</td>";
echo "<td>权限</td><td>邮件地址</td>";
echo "</tr>/n";
while ($myrow = MySQL_fetch_row($result))
{
printf("<tr><td>%s</td><td>%s</td>", $myrow[0], $myrow[1]);
printf("<td>%s</td><td>%s</td>", $myrow[2], $myrow[3]);
printf("<td>%s</td><td>%s</td>", $myrow[4], $myrow[6]);
printf("<td>%s</td><td>%s</td></tr>/n", $myrow[7], $myrow[8]);
}
echo "</table>/n";
?>
</body>
</html>
2.根据id查询
<html>
<body>
<title>
根据id查询
</title>
<?
$db = MySQL_connect("localhost", "root");
MySQL_select_db("mysite",$db);
if ($id) {
$result = MySQL_query("SELECT * FROM user WHERE id=$id",$db);
$myrow = MySQL_fetch_array($result);
printf("<h2 align=left>用户的情况</h2>");
printf("1.ID号 %s/n<br>", $myrow["id"]);
printf("2.姓名: %s/n<br>", $myrow["name"]);
printf("3.城市: %s/n<br>", $myrow["city"]);
printf("4.邮编: %s/n<br>", $myrow["postcode"]);
printf("5.住址: %s/n<br>", $myrow["address"]);
printf("6.等级：%s/n<br>", $myrow["level"]);
printf("7.邮件地址: %s/n<br>", $myrow["email"]);
printf("<a href=/"%s/"> 继续查询 </a>", $PATH_INFO);
}
else
{
$result = MySQL_query("SELECT * FROM user",$db);
if ($myrow = MySQL_fetch_array($result))
{
printf("<h2 align=left>请选择要查询的用户：</h2>");
do {
printf("%s<a href=/"%s?id=%s/">%s </a><br>/n",
$myrow["id"],$PATH_INFO,$myrow["id"], $myrow["name"]);
}
while ($myrow = MySQL_fetch_array($result));
}
else
{
echo "对不起，没有数据！";
}
}
?>
</body>
</html>
3.更新
<html>
<body>
<title>
更新
</title>
<?
//PHP程序的开始
$db = MySQL_connect("localhost", "root");
MySQL_select_db("mysite",$db);
if (!$id)
{
$result = MySQL_query("SELECT * FROM user",$db);
if ($myrow = MySQL_fetch_array($result))
{
printf("<h2 align=left>请选择要修改的用户名字：</h2>");
do {
printf("%s<a href=/"%s?id=%s/">%s </a><br>/n",
$myrow["id"],$PATH_INFO,$myrow["id"], $myrow["name"]);
}
while ($myrow = MySQL_fetch_array($result));
}
else
{
echo "对不起！数据库中没有记录";
}
}
else
{
if ($submit)
{
$sql = "UPDATE user SET name='$name',city='$city',
address='$address',email='$email' WHERE id=$id";
$result = MySQL_query($sql);
echo "谢谢！数据更改完成/n";
}
else
{
$sql = "SELECT * FROM user WHERE id=$id";
$result = MySQL_query($sql);
$myrow = MySQL_fetch_array($result);
//以下不是PHP的部分
?>
<h2 align=left>请对用户的信息进行修改：</h2>
<form method="post" action="<? echo $PATH_INFO ?>">
<input type=hidden name="id"
value="<?php echo $myrow["id"] ?>">
姓名：<input type="Text" name="first" value="<?php
echo $myrow["name"] ?>"><br>
城市：<input type="Text" name="city" value="<?php echo
$myrow["city"] ?>"><br>
住址：<input type="Text" name="address" value="<?php echo
$myrow["address"] ?>"><br>
电子邮件：<input type="Text" name="email" value="<?php echo
$myrow["email"] ?>"><br>
<input type="Submit" name="submit" value="修改完毕">
</form>
<?
//PHP 的结束
65：}
}
?>
</body>
</html>
4.增加删除记录
<html>
<body>
<title>
增加删除记录
</title>
<?
$db = MySQL_connect("localhost", "root");
MySQL_select_db("mysite",$db);
if ($submit)
{
$sql = "INSERT INTO myuser (name,city,address,email)
VALUES ('$name','$city','$address','$email')";
$result = MySQL_query($sql);
echo "记录添加成功！<p>";
}
else
if ($delete)
{
// 删除一条记录
$sql = "DELETE FROM myuser WHERE id=$id";
$result = MySQL_query($sql);
echo "记录删除成功！<p>";
}
else
{
printf("<h2 align=left>删除一个用户的所有信息：</h2>");
$result = MySQL_query("SELECT * FROM myuser",$db);
while ($myrow = MySQL_fetch_array($result))
{
printf("%s:<a href=/"%s?id=%s&delete=yes/">%s</a> <br>/n",
$myrow["id"],$PATH_INFO, $myrow["id"], $myrow["name"]);
}
?>
<P>
<h2 align=left>
添加一个新的用户：
</h2>
<form method="post" action="<?php echo $PATH_INFO?>">
姓名：<input type="Text" name="name" value="<?php
echo $myrow["name"] ?>"><br>
城市：<input type="Text" name="city" value="<?php echo
$myrow["city"] ?>"><br>
住址：<input type="Text" name="address" value="<?php echo
$myrow["address"] ?>"><br>
电子邮件：<input type="Text" name="email" value="<?php echo
$myrow["email"] ?>"><br>
<input type="Submit" name="submit" value="添加用户">
</form>
<?php
}
?>
</body>
</html>
