How to check if php is installed in linux

Linux server managers have been committed to experiencing and enjoying the superior performance of PHP. However, sometimes, we may encounter a problem: How to check whether PHP is installed in the Linux system? This article will explain how to easily check whether PHP is installed in your Linux system.

In Linux systems, there are several ways to check whether PHP is installed. let's start!

Method 1: Use command line tools

The most common method is to use the following command in the command line:

php -v

Enter in the terminal window This command and pressing the Enter key will display the version number of PHP installed in the system. If it is not displayed, PHP is not installed on the system.

Method 2: Check the package manager

We can check whether PHP is installed through the package manager.

If you are using a Linux system installed with .deb package such as Debian or Ubuntu, you can use the following command:

dpkg -l | grep php

If you are using Red Hat, CentOS, Fedora and others. For rpm package systems, you can use the following command:

rpm -qa | grep php

If there is matching output, it means that PHP has been installed, otherwise it has not been installed.

Method Three: Check the Web Server

If PHP is not installed on your system, you may not encounter any problems. Therefore, using a browser to check if PHP is installed is a more practical approach.

In order to check whether PHP is installed in the system, please add the following code snippet and save it as a PHP file:

<?php  phpinfo(); ?>

Upload this file to your web server and open it in the browser Open this file. If everything is fine, you should see information about PHP such as PHP version, configuration settings, and any extensions supported in the server environment.

If you don't see this information, PHP may not be installed, or you may be browsing a non-PHP file.

Summary

The above are the three most common methods to check whether PHP is installed in a Linux system. No matter which method you choose, you should be able to determine whether the language is already installed on your system by checking PHP's version number or compiled module. If you encounter any problems while performing the above steps, please refer to the official documentation or ask for help on the relevant forums.

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