PHP implements submitting form content to database
First use php to create a simple database and table, and use phpMyAdmin to create the MySql database and table. For example, create a test database as follows:
<?php
// 创建连接
$conn = new mysqli("localhost", "uesename", "password");
// 检测连接
if ($conn->connect_error)
{
die("连接失败: " . $conn->connect_error);}
// 创建数据库
$sql = "CREATE DATABASE test";
if ($conn->query($sql) === TRUE)
{
echo "数据库创建成功";
} else {
echo "Error creating database: " . $conn->error;
}
$conn->close();
?>Then use the CREATE TABLE statement to create a MySQL table and set the following fields.
(Related learning video tutorial sharing: php video tutorial)
id: It is unique, type is int, and select the primary key.
uesrname: User name, type is varchar, length is 30.
password: Password, type is varchar, length is 30.
confirm: Confirm password, type is varchar, length is 30.
email: Email, type is varchar, length is 30.
Then use the sql statement to create the database table. The code is shown as follows:
<?php
// 创建连接
$conn = new mysqli("localhost", "uesename", "password","test");
// 检测连接
if ($conn->connect_error)
{
die("连接失败: " . $conn->connect_error);
}
// 使用 sql 创建数据表
$sql = "CREATE TABLE login (
id INT(10) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
username VARCHAR(30) NOT NULL,
password VARCHAR(30) NOT NULL,
confirm VARCHAR(30) NOT NULL,
email VARCHAR(30) NOT NULL,
)ENGINE=InnoDB DEFAULT CHARSET=utf8 ";
if ($conn->query($sql) === TRUE)
{
echo "Table MyGuests created successfully";
} else {
echo "创建数据表错误: " . $conn->error;
}
$conn->close();
?>We have created the database and table above, and now we will create a simple front-end page for form registration. The form page here is very simple, with a few simple text boxes such as user name, password, password confirmation, registration email, etc. The code is as follows:
<!DOCTYPE html>
<html>
<head>
<title>用户注册页面</title>
<meta charset="UTF-8"/>
<style type="text/css">
*{margin:0px;padding:0px;}
ul{
width:400px;
list-style:none;
margin:50px auto;
}
li{
padding:12px;
position:relative;
}
label{
width:80px;
display:inline-block;
float:left;
line-height:30px;
}
input[type='text'],input[type='password']{
height:30px;
}
img{
margin-left:10px;
}
input[type="submit"]{
margin-left:80px;
padding:5px 10px;
}
</style>
</head>
<body>
<form action="zhuce.php" method="post">
<ul>
<li>
<label>用户名：</label>
<input type="text" name="username" placeholder="请输入注册账号"/>
</li>
<li>
<label>密 码：</label>
<input type="password" name="password" placeholder="请输入密码" />
</li>
<li>
<label>确认密码：</label>
<input type="password" name="confirm" placeholder="请再次输入密码" />
</li>
<li>
<label>邮 箱：</label>
<input type="text" name="email" placeholder="请输入邮箱"/>
</li>
<li>
<input type="submit" value="注册" />
</li>
</ul>
</form>
</body>
</html>Next, you need to use PHP code to submit the information submitted by the new user to the database, and use the POST method to transfer and obtain the value.
First of all, you need to connect to the database and table created previously, because the user name, password and other information registered by the new user need to be saved in the corresponding fields in the table. Before storing the data in the database table, make some judgments and verifications on the submitted data. For example, user names, emails, etc. that do not meet the requirements need to be filtered and error prompts are needed. Also, if the user name is registered by other users, you need to be prompted that you will not be able to To use this username again, this is to first read the username that already exists in the database and then make a judgment.
To put it simply, the data submitted by the form is stored in variables, and then the password and verification code are judged. After they are correct, the user information is stored in the database and the database stores all the data in the user information table. Extract and print it out. To put it bluntly, the second half of the sentence is about data storage and retrieval. The specific code is as follows:
<?php
session_start();
header("Content-type:text/html;charset=utf-8");
$link = mysqli_connect('localhost','root','root','test');
if (!$link) {
die("连接失败:".mysqli_connect_error());
}
$username = $_POST['username'];
$password = $_POST['password'];
$confirm = $_POST['confirm'];
$email = $_POST['email'];
if($username == "" || $password == "" || $confirm == "" || $email == "")
{
echo "<script>alert('信息不能为空！重新填写');window.location.href='zhuce.html'</script>";
} elseif ((strlen($username) < 3)||(!preg_match('/^\w+$/i', $username))) {
echo "<script>alert('用户名至少3位且不含非法字符！重新填写');window.location.href='zhuce'</script>";
//判断用户名长度
}elseif(strlen($password) < 5){
echo "<script>alert('密码至少5位！重新填写');window.location.href='zhuce.html'</script>";
//判断密码长度
}elseif($password != $confirm) {
echo "<script>alert('两次密码不相同！重新填写');window.location.href='zhuce.html'</script>";
//检测两次输入密码是否相同
} elseif (!preg_match('/^[\w\.]+@\w+\.\w+$/i', $email)) {
echo "<script>alert('邮箱不合法！重新填写');window.location.href='zhuce.html'</script>";
//判断邮箱格式是否合法
} elseif(mysqli_fetch_array(mysqli_query($link,"select * from login where username = '$username'"))){
echo "<script>alert('用户名已存在');window.location.href='zhuce.html'</script>";
} else{
$sql= "insert into login(username, password, confirm, email)values('$username','$password','$confirm','$email')";
//插入数据库
if(!(mysqli_query($link,$sql))){
echo "<script>alert('数据插入失败');window.location.href='zhuce.html'</script>";
}else{
echo "<script>alert('注册成功！)</script>";
}
}
?> Recommended related articles and tutorials: php tutorial
The above is the detailed content of PHP implements submitting form content to database. For more information, please follow other related articles on the PHP Chinese website!
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
AI Hentai Generator
Generate AI Hentai for free.
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
CakePHP Project Configuration
Sep 10, 2024 pm 05:25 PM
In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.
PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian
Dec 24, 2024 pm 04:42 PM
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
CakePHP Date and Time
Sep 10, 2024 pm 05:27 PM
To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.
CakePHP File upload
Sep 10, 2024 pm 05:27 PM
To work on file upload we are going to use the form helper. Here, is an example for file upload.
CakePHP Routing
Sep 10, 2024 pm 05:25 PM
In this chapter, we are going to learn the following topics related to routing ?
Discuss CakePHP
Sep 10, 2024 pm 05:28 PM
CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu
How To Set Up Visual Studio Code (VS Code) for PHP Development
Dec 20, 2024 am 11:31 AM
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
CakePHP Creating Validators
Sep 10, 2024 pm 05:26 PM
Validator can be created by adding the following two lines in the controller.
