php 登录访问问题
做个简单的录入网页
登录是可以了 但是 我想 一个用户 只能管理一个村的数据 现在登录进去之后 地址栏?id= 后面我可以随便修改 一样能登录···
比如 一个人用1帐号登录进来 只能管理1的数据 但是在地址栏把1 改成2 他就可以管理2的数据 怎么限制的·· 本人菜鸟 表示很蛋疼 在线跪求大手
<?php $conn=mysql_connect("localhost","xypi20","a16812343"); mysql_select_db("js"); mysql_query("set names 'gb2312'"); if(isset( $_POST["user"])){ $user=$_POST["user"]; $password=$_POST["password"]; $sql="select * from login where user='{$user}'and password='{$password}'"; $query=mysql_query($sql); $array=mysql_fetch_array($query); if($user==$array{'user'} and $password==$array{'password'} ){ $kind=$array{'kind'}; session_start(); $_SESSION['keyword']= "$kind"; echo"<script>alert('登录成功!');location.href='test.php?id=$kind';</script>"; } else echo"<script>alert('请重新登录!');location.href='login.php';</script>"; } ?>
管理界面
<?php $conn=mysql_connect("localhost","xypi20","a16812343"); mysql_select_db("js"); mysql_query("set names 'gb2312'"); $kind = $_GET['id']; /*session_start(); if(!isset($_SESSION['keyword'])) echo"<script>alert('请登录!');location.href='login.php';</script>";*/ echo $kind; session_start(); if( isset($_SESSION['keyword']) !=$kind) echo"<script>alert('请登录!');location.href='login.php';</script>"; ?> <?php if(isset($_POST["name"],$_POST["time"])){ $name=$_POST["name"]; $time=$_POST["time"]; echo $name; echo $time; echo $kind; $sql="SELECT * FROM 数据 where kind='$kind' "; if($name) //name不为空 { $sql .=" and 姓名='$name' "; if($time) $sql .=" and 录入时间='$time' "; } elseif($time) { $sql .="and 录入时间='$time'"; }
问题就在这查询里面我 是直接 where kind='$kind' 所以不管用什么帐号登录进来 修改地址栏的kind就可以查询别的数据了···
以上就是对使用PHP实现生成HTML静态页面,php静态页面的全部介绍,如果您想了解更多有关php编程入门,请关注PHP中文网。

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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