您的位置：首页 > 编程语言 > PHP开发

PHP——修改数据库1

2016-01-26 23:09 761 查看


主页面——0126.php

代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

<body>
<h1>主页面</h1>
<div style="width:100%">
<?php
//1.生成连接 造连接对象

//$db=new mysqli($dbhost（服务器）,$username,$userpass,$dbdatabase);
$db = new mysqli("localhost","root","123","mydb");
//2.判断是否连接成功 成功为空，失败返回string（字符串）错误信息
if(mysqli_connect_error())
{
echo "连接失败";
//exit  退出整个程序
}
else
{
//3.写sql语句
$sql = "select * from Info";
//4.执行sql语句
$result=$db->query($sql);
//5.处理数据（提取数据）
echo "<table width=90% cellpadding='0' cellspacing='0' border='1'>";
echo "<tr><td>代号</td> <td>姓名</td> <td>性别</td> <td>民族</td> <td>生日</td> <td>操作</td></tr>";
//遍历每一条数据
while($row=$result->fetch_row())
{
//处理性别
$sex=(bool)$row[2]?"男":"女";
//处理民族
$nation=NationName($db,$row[3]);//调方法不加$
//处理生日
$birthday=date("Y年m月d日",strtotime($row[4]));

echo "<tr bgcolor='#00CC33'><td>{$row[0]}</td> <td>{$row[1]}</td> <td>{$sex}</td> <td>{$nation}</td> <td>{$birthday}</td><td><a href='Delete.php?code=".$row[0]."'>删除</a>  <a href='xiugai.php?code=".$row[0]."'>修改</a></td></tr>";

}

echo "</table>";

}
//根据民族代号查询民族名称
function NationName($db,$code)
{
//3.写sql语句
$sql = "select * from Nation where code='{$code}'";
//4.执行sql语句
$result=$db->query($sql);
//处理数据
if($row=$result->fetch_row())
{
return $row[1];//不加""
}
else
{
return "";
}
}

?>
</div>
<div><a href="ADD.php">添加数据</a>
</div>

</body>
</html>




添加数据：

添加页面——ADD.php

<body>
<h1>添加页面</h1>

<form action="Insert.php" method="post">
<div><span>代号:</span><input type="text" name="code" /></div>
<div><span>姓名:</span><input type="text" name="name"/></div>
<div><span>性别:</span><input type="radio" name="sex" value="true" checked="checked"/>男   <input type="radio" name="sex" value="false"/>女</div>
<div><span>民族:</span>
<select name="nation">
<?php
//1.连接数据库
$db= new mysqli("localhost","root","123","mydb");
//2.判断是否连接成功
if(mysqli_connect_error())
{
echo "连接失败";
}
else
{
//3.写sql语句
$sql="select * from nation";
//4.执行sql语句
$result=$db->query($sql);
//5.处理数据，遍历
while($row=$result->fetch_row())
{
echo "<option value='{$row[0]}'>{$row[1]}</option>";
}
}

?>
</select>
</div>
<div><span>生日:</span><input type="text" name="birthday"/></div>
<div><input type="submit" value="添加"/>  <a href="0126.php">返回</a></div>
</form>

</body>




添加数据——处理页面——insert.php

<?php

$code = $_POST["code"];
$name = $_POST["name"];
$sex = $_POST["sex"];
$nation = $_POST["nation"];
$birthday = $_POST["birthday"];
//1.造连接对象
$db= new mysqli("localhost","root","123","mydb");
//2.判断是否连接
if(mysqli_connect_error())
{
echo "连接错误";
}
else
{
//3.写添加语句
$sql="insert into Info values('{$code}','{$name}',{$sex},'{$nation}','{$birthday}')";
//4.执行语句
$result=$db->query($sql);
//5.判断是否添加成功
if($result)
{
header("Location:ADD.php");//跳回页面
}
else
{
echo "添加失败";
}
}

?>


删除数据处理页面——delete.php

<?php
$code = $_GET["code"];
//1.造连接对象
$db=new mysqli("localhost","root","123","mydb");
//2.判断连接是否成功
if(mysqli_connect_error())
{
echo "连接错误";
}
else
{
//3.写sql语句
$sql="delete from Info where code='".$code."'";
//4.执行sql语句
$result=$db->query($sql);
//判断是否删除成功
if($result)
{
header("Location:0126.php");
}
else
{
echo "删除失败!";
}

}

?>


修改数据——修改页面——xiugai.php

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

<body>
<h1>修改页面</h1>
<?php
$code = $_GET["code"];
//1.造连接对象
$db = new mysqli("localhost","root","123","mydb");
//2.判断是否连接成功
if(mysqli_connect_error())
{
echo "连接失败";
}
else
{
//3.写sql语句
$sql="select * from Info where code='".$code."'";
//4.执行sql语句
$result=$db->query($sql);
//5.处理数据
$row=$result->fetch_row();
}

?>
<form action="update.php" method="post">
<div><span>代号：</span><input type="text" name="code" value="<?php echo $row[0]?>" readonly="readonly" /></div>
<div><span>姓名：</span><input type="text" name="name" value="<?php echo $row[1]?>"</div>
<div>
<span>性别：</span>
<input type="radio" name="sex" value="true"
<?php echo (bool)$row[2]?"checked='checked'":""?>
/>男  
<input type="radio" name="sex" value="false"
<?php echo !(bool)$row[2]?"checked='checked'":""?>
/>女
</div>
<div>
<span>民族：</span>
<select name="nation">
<?php
//1.造连接对象
$db=new mysqli("localhost","root","123","mydb");
//2.判断连接是否成功
if(mysqli_connect_error())
{
echo "连接失败";
}
else
{
//3.写sql语句
$sql="select * from nation";
//4.执行sql语句
$result=$db->query($sql);
//5.处理数据
//遍历数据
while($rownation=$result->fetch_row())
{
if($rownation[0]==$row[3])
{
echo "<option selected='selected' value='{$rownation[0]}'>{$rownation[1]}</option>";
}
else
{
echo "<option value='{$rownation[0]}'>{$rownation[1]}</option>";
}
}

}
?>
</select>
</div>
<div><span>生日：</span><input type="text" name="birthday" value="<?php echo $row[4] ?>"</div>
<div><input type="submit" value="修改" />  
<a href="0126.php">返回</a></div>
</form>
</body>
</html>




修改数据——处理页面——update.php

<?php
$code=$_POST["code"];
$name=$_POST["name"];
$sex=$_POST["sex"];
$nation=$_POST["nation"];
$birthday=$_POST["birthday"];
//1.造连接对象
$db=new mysqli("localhost","root","123","mydb");
//2.判断是否连接成功
if(mysqli_connect_error())
{
echo "连接失败";
}
else
{
//3.写语句
$sql="update info set name='".$name."',sex='".$sex."',nation='".$nation."',birthday='".$birthday."'where code='".$code."'";
//4.执行sql语句
$result = $db->query($sql);
//判断是否修改成功
if($result)
{
header("Location:0126.php");
}
else
{
echo "修改失败！";
}

}

?>
内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理 点击这里给我发消息
标签： 
相关文章推荐
新的分享
章节导航