为什么我用php代码插入数据到mysql中 显示为空
为什么我用php代码插入数据到mysql中 有的字段显示为空 有的就能出现插入的值 我的代码如下
include("conn.php");
if ($_POST['submit']){
$sql="insert into message (id,user,title,content,lastdate) " .
"value ('','$_POST[user]','$_POST[title]','$_POST[content]',now())";
mysql_query($sql);
echo "发表成功";
}
?>
这个事phpmyadmin中的内容
id user title content lastdate
1 我的一个标题 我的PHP 2012-04-15
2 _ 我的内容 你的PHP 2012-04-15
回复讨论(解决方案)
mysql_query($sql) or die(mysql_error());
提出结果!
可能不贴你都知道是怎么回事了
echo $sql ; //输出什么结果。另外贴你表结构。
$conn=@mysql_connect("localhost","root","") or die ("连接不成功");
mysql_select_db("bbs",$conn);
mysql_query("set names 'GBK'");
?>
这个是连接数据库的PHP代码
CREATE TABLE `message` (
`id` tinyint(1) NOT NULL auto_increment,
`user` varchar(25) NOT NULL,
`title` varchar(50) NOT NULL,
`content` tinytext NOT NULL,
`lastdate` date NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk AUTO_INCREMENT=1 ;
这个是插入表的sql语句
echo $sql ;输出的结果是这个
insert into message (id,user,title,content,lastdate) value ('','','测试标题','',now())
echo $sql ; //输出什么结果。另外贴你表结构。
$conn=@mysql_connect("localhost","root","") or die ("连接不成功");
mysql_select_db("bbs",$conn);
mysql_query("set names 'GBK'");
?>
这个是连接数据库的PHP代码
CREATE TABLE `message` (
`id` tinyint(1) NOT NULL auto_increment,
`user` varchar(25) NOT NULL,
`title` varchar(50) NOT NULL,
`content` tinytext NOT NULL,
`lastdate` date NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk AUTO_INCREMENT=1 ;
这个是插入表的sql语句
没有问题啊。不知道你说的有些字段没有值是指哪个字段?
没有问题啊。不知道你说的有些字段没有值是指哪个字段?
echo $sql ;输出的结果是这个
insert into message (id,user,title,content,lastdate) value ('','','测试标题','',now())
values 还有什么问题吗?
values 还有什么问题吗?
我把value改为values以后
echo $sql ;
insert into message (id,user,title,content,lastdate) values ('','','子哈','',now())
插入的user和content内容还是为空 费解啊 会不会是mysql和表的编码不一样 我安装的是xamp集成环境 我在mysql配置文件里面设置了这个default-character-set=gbk 在[Client]下 在[mysqld]下设置了default-character-set=gbk
已经跟你说过了
mysql_query($sql) or die(mysql_error());
提出结果!
有的字段显示为空 有的就能出现插入的值
你上面INSERT 语句很多值都是'' 为空有什么奇怪?
有的字段显示为空 有的就能出现插入的值
你上面INSERT 语句很多值都是'' 为空有什么奇怪?
我插入的时候是打了很多内容的 但是echo那个语句出来就是现实为空 一模一样的字段内容插入后user和content都为空 但是title不是空的 能插入
mysql_query($sql) or die(mysql_error());
提出结果!
可能不贴你都知道是怎么回事了
已经把这个语句加入了 没有什么提示 插入内容是成功的
if ($_POST['submit']){
print_r($_POST); // 贴出结果。看是否有值
有的字段显示为空 有的就能出现插入的值
你上面INSERT 语句很多值都是'' 为空有什么奇怪?
不是我插入的空值 我插入相同的字段内容到3个字段中 user和content都显示为空 只有title字段显示出我插入的内容
用户:
text错了
$_POST[ content]
看出来了吗
问题解决没有,楼主?我也遇到了一样的问题
请问这个问题解决了吗?

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
