How to determine whether php is installed successfully

PHP is a common server-side scripting language that is often used for web development. However, after installing PHP, how to determine whether PHP is successfully installed has become a very important issue.

In this article, we will explain how to determine whether PHP installation is successful through the following content, which will help you better understand how to configure PHP on your web server.

Step 1: Check PHP Installation

Before you install PHP, you need to make sure it is installed correctly on your web server. In order to check the installation of PHP, you can run the following command:

php -v

This will display the version of PHP. If PHP is already installed, the output will be similar to the following:

PHP 7.2.24-0ubuntu0.18.04.7 (cli) (built: Oct  7 2020 15:24:25) (NTS)

If you When you see the above output, it means that PHP has been successfully installed.

Step 2: Check the PHP module

When installing PHP, some modules may be installed, such as MySQL module, cURL module, etc. In order to check whether these modules are installed correctly, you can use the phpinfo() function.

<?php phpinfo();
?>

Save the above code as a phpinfo.php file and upload it to your web server. Run the program to open it in your browser.

If everything is successful, you should see output similar to the following:

In the above image, you will find the List of details, including enabled and disabled status. You can check this list to make sure all the modules you need are installed correctly.

Step 3: Create PHP File

In this step, we will create a simple PHP file and upload it to your web server. This file will help us check if PHP is running properly.

<?php echo "Hello World!";
?>

Save the above code into a file called helloworld.php and upload it to your web server. Now enter your website URL in your browser and add helloworld.php at the end. If you see a message similar to "Hello World!", it means that PHP was successfully installed and the PHP files are executing correctly.

Summary

Checking whether PHP is installed successfully requires performing some simple operations, such as checking the PHP version, module list and testing PHP scripts. If you completed the above steps and did not encounter any errors, it means that PHP has been successfully installed. If you are having trouble, you can try to learn more about PHP installation or contact your web server administrator for help.

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