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This article aims to introduce beginners to how to learn and use PHP on Windows servers. PHP is a simple and easy-to-learn programming language that is widely used in the development of web applications. Whether you have programming experience or not, this article will help you learn how to get started with PHP.
Install PHP and Web Server
To use PHP on a Windows server, you need to install PHP and Web server. Here are the steps to install PHP and a web server on Windows:
extension_dir = "ext"
extension=php_mysql.dll
extension=php_mysqli.dll
At the same time, add the following lines in the LoadModule section of Apache's configuration file httpd.conf:
LoadModule php5_module "D:/php/php5apache2_4.dll"
AddHandler application/x-httpd -php .php
PHPIniDir "D:/php"
The purpose of the above content is to tell the Apache server which PHP interpreter and PHP expansion and loading. Please make corresponding modifications according to your actual installation path.
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Enter "http://localhost/index.php" in the browser. If the PHP information is successfully displayed, it means that both PHP and Apache have been successfully installed.
Learn PHP basic syntax
After you understand how to set up PHP and Web servers, you can start to learn the basic syntax of PHP. Here is some basic syntax:
if($age < 18){
echo "You are too young to drive.";
}else{
echo "You can drive!";
}
for($i=0;$i<10;$i ){
echo $i;
}
function add($a, $b){
return $a + $b;
}
Use PHP to connect to MySQL database
In a Web application In development, the database is crucial. MySQL is a popular open source relational database and it is very easy to use MySQL with PHP. The following are the steps to connect to a MySQL database:
$conn = mysqli_connect("localhost", "username", "password", "database");
where "localhost" is the address of the MySQL server, "username" is the MySQL username, "password" is the MySQL password, and "database" is the name of the database to be connected.
$query = "SELECT * FROM users";
$result = mysqli_query($conn, $query);
while($row = mysqli_fetch_array($result)){
echo $row['name'];
}
This article only introduces the introductory knowledge of PHP and the use of MySQL database . Both PHP language and MySQL database are widely used in web application development. Learning these basic knowledge can help you better understand web development. During the learning process, continuous practice and practice are required to truly master this knowledge.
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