PHP Extensions. Which ones?

  • Posted May 10, 2022
  • PHP

I wanted to know which PHP extensions I have installed. How do I query that? how do I install specific extensions, once I find out if the ones I need for an installation are missing?


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In addition to what has been mentioned already, another way of doing this is using the following command:

php -m

This will show you all of the loaded PHP modules.

Alternatively, you can also create a PHP info file, called info.php for example, with the following content:



Then if you were to visit the file via your browser you will see all of the needed PHP configurations on your server.



Ey @aecsp2000,

You can check for the package versions installed on the system to get the PHP version:

$ sudo apt list --installed | grep php

PHP extensions are compiled libraries that extend the core functionality of PHP. Extensions are available as packages and can be easily installed with apt.

$ sudo apt install php-[extname]

For example, to install MySQL and GD extensions, you would run the following command:

$ sudo apt install php-mysql php-gd

After installing a new PHP extension, depending on your setup, do not forget to restart Apache or PHP FPM service.

Hope that helps,

Sergio Turpín