How to build a graphical interface and install PHP in CentOS7

CentOS 7 is an operating system based on Red Hat Enterprise Linux and is widely used in server and desktop environments. Its advantages are stability, security, efficiency, open source code, and free use.

This article will introduce how to build a graphical interface in CentOS 7 and install PHP and related extensions in it. This will make it easier for you to manage your server while also running applications such as websites.

1. Install the graphical interface

First, we need to install the graphical interface. In CentOS 7, you can use desktop environments such as GNOME or KDE. The following takes GNOME as an example.

1. Install the GNOME desktop environment

Here we use the yum command to install the GNOME desktop environment. Open the terminal and enter the following command:

sudo yum groupinstall “GNOME Desktop” “Graphical Administration Tools”

Note: "GNOME Desktop" and "Graphical Administration Tools" must be enclosed in quotation marks, otherwise the command will not execute properly.

This command will automatically download and install GNOME related packages, which may take a while. After the command execution is completed, we need to set the GNOME desktop environment to the default runlevel. Enter the following command:

sudo systemctl set-default graphical.target

This command will change the default run level of the system to the graphical interface. Restart the server to enter the GNOME interface.

2. Remote connection

If you manage CentOS 7 through remote connection, you need to install the VNC service. VNC is a protocol for remote desktop control that allows users to access the desktop environment of a remote computer through the Internet.

To install the VNC service, you need to enter the following command:

sudo yum install tigervnc-server

After the installation is complete, enter the following command to configure the VNC service:

vncserver

This command will prompt you to set the VNC password. After the setup is complete, the VNC service can be started. At this point, you can use the VNC client to connect to the desktop interface of the CentOS 7 server.

2. Install PHP

After installing the graphical interface, the next step is to install PHP. PHP is a scripting language for writing web applications and is widely used in server-side development.

1. Installing PHP

In CentOS 7, you can use the YUM command to install PHP. Enter the following command:

sudo yum install php

This command will automatically download and install PHP related software packages. After waiting for the installation to complete, you can enter the following command in the terminal to check the PHP version:

php -v

If the PHP version number appears, it means that PHP has been installed successfully.

2. Install PHP extensions

In addition to basic PHP functions, we also need to install some extensions to support the development of web applications. Here are some commonly used PHP extensions:

• PHP MySQL extension: allows PHP to interact with the MySQL database.
• PHP GD extension: used to generate image files in PHP.
• PHP XML extension: used to process XML data.

To install these extensions, you can use the following command:

sudo yum install php-mysql php-gd php-xml

This command will automatically download and install the related software packages for these extensions. Once installed, you can use these extensions in PHP.

3. Summary

Building a graphical interface and installing PHP in CentOS 7 allows us to manage the server more conveniently and run applications such as websites. During the installation process, you need to pay attention to the command parameters enclosed in quotation marks and set the default run level. When installing PHP extensions, just select the extensions you want to install as needed.

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