用PHP向数据库中实现简单的增删改查(纯代码)

 

用PHP向数据库中实现简单的增删改查(纯代码)
<?php

    $con = mysql_connect("localhost:3306","root","");



    if (!$con) {

        die('Could not connect: ' . mysql_error());

    }



    mysql_select_db("test", $con);



    $result = mysql_query("SELECT * FROM user");



    echo "<table border='1'>

    <tr>

    <th>Username</th>

    <th>Password</th>

    </tr>";



    while($row = mysql_fetch_array($result)) {

        echo "<tr>";

        echo "<td>" . $row['username'] . "</td>";

        echo "<td>" . $row['password'] . "</td>";

        echo "</tr>";

    }

    echo "</table>";



    mysql_close($con);



?>
从服务器中获取用户所有信息(SQL SELECT语句)并以表格形式出现

 

用PHP向数据库中实现简单的增删改查(纯代码)
<?php

    $con = mysql_connect("localhost","root","");

    if (!$con) {

        die('Could not connect: ' . mysql_error());

    }



    mysql_select_db("test", $con);



    mysql_query("DELETE FROM user WHERE username = '$_POST[username]'");



    mysql_close($con);

?>
删除该用户所有信息delete.php

 

用PHP向数据库中实现简单的增删改查(纯代码)
<?php

    $con = mysql_connect("localhost:3306","root","");



    if (!$con) {

        die('Could not connect: ' . mysql_error());

    }



    mysql_select_db("test", $con);



    $sql = "INSERT INTO user (username,password)

    VALUES

    ('$_POST[username]','$_POST[password]')";



    if (!mysql_query($sql,$con)) {

        die('Error: ' . mysql_error());

    }



    echo "1 record added";



    mysql_close($con);



?>
注册一个新用户insert.php

 

用PHP向数据库中实现简单的增删改查(纯代码)
<?php



    $con = mysql_connect("localhost","root","");

    if (!$con) {

        die('Could not connect: ' . mysql_error());

    }



    mysql_select_db("test", $con);



    mysql_query("UPDATE user SET password = '$_POST[password]' WHERE username = '$_POST[username]'");



    mysql_close($con);

?>
修改一个用户密码update.php

 

用PHP向数据库中实现简单的增删改查(纯代码)
<html>

    <head>

        <title>FORM</title>

    </head>

    <body>

        <br />

        <h1>Insert:</h1>

        <form action="insert.php" method="post">

            username:<input type="name" name="username"/>

            <br />

            password:<input type="password" name="password"/>

            <input type="submit" value="submit"/>

        </form>

        <br /><hr /><br />

        <h1>Delete</h1>

        <form action="delete.php" method="post">

            username:<input type="name" name="username" />

            <br />

            Are you sure?<input type="submit" value="sure" />

        </form>

        <br /><hr /><br />

        <h1>Update</h1>

        <form action="update.php" method="post">

            username:<input type="name" name="username"/>

            <br />

            You want to change your password into:<input type="password" name="password"/>

            <input type="submit" value="submit"/>

        </form>

        <br /><hr /><br />

    </body>

</html>
以上三个功能的提交源Operate.html

 

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