Interactive use of PHP4 and MySQL_PHP tutorial
1. Start by establishing a connection to the MySQL database.
First, we should create an infostar table in a database in MySQL:
Follow the steps of testing MySQL and manually create the table we need after seeing the "mysql>" prompt:
mysql>CREATE DATABASE mydb
mysql>USE mydb
mysql>CREATE TABLE infostar(
->name VARCHAR(25),
-> ;email VARCHAR(25),
->choice VARCHAR(10));
Okay, the table is created.Next, create a meeting form with users (pure HTML file)
diaocha.htm
its format As follows:
What fruit do you like to eat
Name: but >
Let’s create a PHP program to receive and process the information from the diaocha.htm form
diaocha.php
/* Define some related variables, For use by the mysql_connect() function below*/
$hostname="localhost";
$username="root";
$password="";
$dbname="mydb";
/* Used to store the email address of the site administrator*/
$adminaddress="webmaster@youweb.com";
/* This is the table we just created to store User data*/
$userstable="infostar" ;
/* Establish a connection below*/
mysql_connect($hostname,$username,$password) or die ("Unable to connect database" );
/* Select the database mydb below. Adding the (@) symbol before the function will suppress the display of error messages.*/
@mysql_select_db("$dbname")or die("Unable ro select database");
print"
print"Hello:$name.";
print"
";
print"Your email is:$email
";
print"Thank you for your participation
";
/* Put The information is inserted into the table infostar*/
/* Because the database table was selected using the mysql_select_db function earlier. Therefore, there is no need to enter the table name below*/
$query="INSERT INTO $userstable VALUES('$ name','$email','$choice')";
$result=mysql_query($query);
print"We have saved your information in the database.";
/* Close the database connection*/
mysql_close();
?> Easy.
We have stored the information in the database, so how can we browse the data?
Next, we try to list all the friends who like to eat apples and create the apple.php file
apple.php
/* Define some related variables for use by the mysql_connect() function below*/
$hostname="localhost";
$username="root";
$password="";
$dbname="mydb";
$userstable="infostar" ;
/* Establish a connection below and select Database*/
mysql_connect($hostname,$username,$password) or die ("Unable to connect database");
@mysql_select_db("$dbname")or die("Unable ro select database");
/* Select all users who like Apple*/
$query="SELECT * FROM $userstable WHERE choice='apple'";
$result=mysql_query($query);
/* Calculate how many such users there are*/
$number=mysql_num_rows($result);
/* Display the results*/ /
$i=0;
IF ($number==0){
print"
No one likes Apple
ELSE {
print"
Users who like apples are: $number
";
WHILE ($i<$number):
$name =mysql_result($result,$i,"name");
$email=mysql_result($result,$i,"email");
print"$name likes to eat apples
";
print"Email address: $email
";
$i++;
endwhile;
print"
}
?> ;
Call apple.php in the browser and see what appears.

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











The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

Laravel is a PHP framework for easy building of web applications. It provides a range of powerful features including: Installation: Install the Laravel CLI globally with Composer and create applications in the project directory. Routing: Define the relationship between the URL and the handler in routes/web.php. View: Create a view in resources/views to render the application's interface. Database Integration: Provides out-of-the-box integration with databases such as MySQL and uses migration to create and modify tables. Model and Controller: The model represents the database entity and the controller processes HTTP requests.

I encountered a tricky problem when developing a small application: the need to quickly integrate a lightweight database operation library. After trying multiple libraries, I found that they either have too much functionality or are not very compatible. Eventually, I found minii/db, a simplified version based on Yii2 that solved my problem perfectly.

Article summary: This article provides detailed step-by-step instructions to guide readers on how to easily install the Laravel framework. Laravel is a powerful PHP framework that speeds up the development process of web applications. This tutorial covers the installation process from system requirements to configuring databases and setting up routing. By following these steps, readers can quickly and efficiently lay a solid foundation for their Laravel project.

MySQL and phpMyAdmin are powerful database management tools. 1) MySQL is used to create databases and tables, and to execute DML and SQL queries. 2) phpMyAdmin provides an intuitive interface for database management, table structure management, data operations and user permission management.

Oracle is not only a database company, but also a leader in cloud computing and ERP systems. 1. Oracle provides comprehensive solutions from database to cloud services and ERP systems. 2. OracleCloud challenges AWS and Azure, providing IaaS, PaaS and SaaS services. 3. Oracle's ERP systems such as E-BusinessSuite and FusionApplications help enterprises optimize operations.

Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA
