<code><?php include("conn/conn.php"); $online_number=$_POST[online_number]; $online_pass=$_POST[online_pass]; $query=mssql_query("select * from tb_user where online_number='"."$online_number"."' and online_pass='$online_pass'"); if(mssql_num_rows($query)>0){ session_register(online_number); echo "<script> alert('登录成功!'); window.location.href='index.php?online=进入考场';</script>"; }else{ echo "登录失败!"; } ?></code>
<code>$con=@mysql_connect('localhost','root','root') ; if($con) { echo "连接45成功"; }</code>
我买了一本php项目开发实战密码 于广/编著 太坑爹了。
浏览器提示 Call to undefined function mssql_query() denglu_ok.php on line 5 ?
回复内容:
<code><?php include("conn/conn.php"); $online_number=$_POST[online_number]; $online_pass=$_POST[online_pass]; $query=mssql_query("select * from tb_user where online_number='"."$online_number"."' and online_pass='$online_pass'"); if(mssql_num_rows($query)>0){ session_register(online_number); echo "<script> alert('登录成功!'); window.location.href='index.php?online=进入考场';</script>"; }else{ echo "登录失败!"; } ?></code>
<code>$con=@mysql_connect('localhost','root','root') ; if($con) { echo "连接45成功"; }</code>
我买了一本php项目开发实战密码 于广/编著 太坑爹了。
浏览器提示 Call to undefined function mssql_query() denglu_ok.php on line 5 ?
1.mysql_query()
2.别用mysql_connect了,php.net mysql_connect
Note:
本扩展自 PHP 5.5.0 起已废弃,并在将来会被移除。应使用 MySQLi 或 PDO_MySQL 扩展来替换之。参见 MySQL:选择 API 指南以及相关 FAQ 以获取更多信息。用以替代本函数的有:<code>mysqli_connect() PDO::__construct() </code>
mysql_query(),不是mssql_query()你没有定义mssql_query()当然无法调用。
<code>Call to undefined function mssql_query()?</code>
调用未定义的函数报错,应改为mysql_query()
哥哥,你截图的是mysql,函数却调用mssql,后者是sqlserver的

PHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

The reasons why PHP is the preferred technology stack for many websites include its ease of use, strong community support, and widespread use. 1) Easy to learn and use, suitable for beginners. 2) Have a huge developer community and rich resources. 3) Widely used in WordPress, Drupal and other platforms. 4) Integrate tightly with web servers to simplify development deployment.


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