PHP！在一个php文件中怎么执行两个不同的insert语句-PHP Tutorial-php.cn

Home

Backend Development

PHP Tutorial

PHP！在一个php文件中怎么执行两个不同的insert语句

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jun 13, 2016 am 11:23 AM

contentinsertnbsp

PHP求助！在一个php文件中如何执行两个不同的insert语句？

<?php <br />session_start();<br />include("Conn/conn.php");<br /><br />$ISBN=$_POST["ISBN"];<br />$B_Name=$_POST["bookName"];<br />$B_Author=$_POST["B_Author"];<br />$B_Pub=$_POST["B_Pub"];<br />$B_Author=$_POST["B_Author"];<br />$B_BuyTime=date("Y-m-d");<br /><br />$B_Num=$_POST["B_Num"];<br />$Content=$_POST["content"];<br />echo $B_Num."<br>";//测试输出语句<br />echo $Content;//测试输出语句<br />$sql1=mysql_query("insert into book1(ISBN,B_Name,B_Author,B_Pub,B_BuyTime)values('$ISBN','$B_Name','$B_Author','$B_Pub','$B_BuyTime')");<br /><br />$sql2=mysql_query("insert into book2(B_Num,ISBN,Borrowed,Ordered,Introduction)values('$B_Num','$ISBN','否'，'否','$Content')");<br /><br />echo "<script language='javascript'>alert('图书信息添加成功!');history.back();location.href='book.php';</script>";<br />?><br /><meta http-equiv="Content-Type" content="text/html; charset=gb2312">

这是另一个PHP文件单击“提交”按钮后执行的PHP文件，通过输出测试$B_Num和$Content明确这两个变量中都有值。执行后查看mysql数据库可知book1表中成功插入一行数据，但是book2表中并未插入数据，好像只有sql1语句执行了，sql2语句并没有执行，那位大侠帮帮我修改一下，能达到的同时向两个不同表中插入数据就行！

PHP mysql insert 插入语句两个sql语句
------解决方案--------------------
输出变量为NULL ?
$sql2=mysql_query("insert into book2(B_Num,ISBN,Borrowed,Ordered,Introduction)values('$B_Num','$ISBN','否'，'否','$Content')") or die(mysql_error());
这样看看有不有错误信息
------解决方案--------------------
肯定是你的insert语句有问题。首先检查每个val是否与field类型匹配，然后检查有没有非空字段没有赋值的。
然后你的SQL语句用的是单引号包含的变量，双引号串中的内容可以被解释而且替换，而单引号串中的内容总被认为是普通字符。如果上面方法都不行，就把单引号换成双引号试试。

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

How can you prevent session fixation attacks?Apr 28, 2025 am 12:25 AM

Effective methods to prevent session fixed attacks include: 1. Regenerate the session ID after the user logs in; 2. Use a secure session ID generation algorithm; 3. Implement the session timeout mechanism; 4. Encrypt session data using HTTPS. These measures can ensure that the application is indestructible when facing session fixed attacks.

How do you implement sessionless authentication?Apr 28, 2025 am 12:24 AM

Implementing session-free authentication can be achieved by using JSONWebTokens (JWT), a token-based authentication system where all necessary information is stored in the token without server-side session storage. 1) Use JWT to generate and verify tokens, 2) Ensure that HTTPS is used to prevent tokens from being intercepted, 3) Securely store tokens on the client side, 4) Verify tokens on the server side to prevent tampering, 5) Implement token revocation mechanisms, such as using short-term access tokens and long-term refresh tokens.

What are some common security risks associated with PHP sessions?Apr 28, 2025 am 12:24 AM

The security risks of PHP sessions mainly include session hijacking, session fixation, session prediction and session poisoning. 1. Session hijacking can be prevented by using HTTPS and protecting cookies. 2. Session fixation can be avoided by regenerating the session ID before the user logs in. 3. Session prediction needs to ensure the randomness and unpredictability of session IDs. 4. Session poisoning can be prevented by verifying and filtering session data.

How do you destroy a PHP session?Apr 28, 2025 am 12:16 AM

To destroy a PHP session, you need to start the session first, then clear the data and destroy the session file. 1. Use session_start() to start the session. 2. Use session_unset() to clear the session data. 3. Finally, use session_destroy() to destroy the session file to ensure data security and resource release.

How can you change the default session save path in PHP?Apr 28, 2025 am 12:12 AM

How to change the default session saving path of PHP? It can be achieved through the following steps: use session_save_path('/var/www/sessions');session_start(); in PHP scripts to set the session saving path. Set session.save_path="/var/www/sessions" in the php.ini file to change the session saving path globally. Use Memcached or Redis to store session data, such as ini_set('session.save_handler','memcached'); ini_set(

How do you modify data stored in a PHP session?Apr 27, 2025 am 12:23 AM

TomodifydatainaPHPsession,startthesessionwithsession_start(),thenuse$_SESSIONtoset,modify,orremovevariables.1)Startthesession.2)Setormodifysessionvariablesusing$_SESSION.3)Removevariableswithunset().4)Clearallvariableswithsession_unset().5)Destroythe

Give an example of storing an array in a PHP session.Apr 27, 2025 am 12:20 AM

Arrays can be stored in PHP sessions. 1. Start the session and use session_start(). 2. Create an array and store it in $_SESSION. 3. Retrieve the array through $_SESSION. 4. Optimize session data to improve performance.

How does garbage collection work for PHP sessions?Apr 27, 2025 am 12:19 AM

PHP session garbage collection is triggered through a probability mechanism to clean up expired session data. 1) Set the trigger probability and session life cycle in the configuration file; 2) You can use cron tasks to optimize high-load applications; 3) You need to balance the garbage collection frequency and performance to avoid data loss.

See all articles