How to check PHP and other software versions via SSH

Quick way to view installed software versions on your VPS or dedicated server.

When managing a server, you often need to quickly check the versions of installed components such as PHP, web server, database, and other services. This is useful for compatibility checks, planning updates, or troubleshooting issues.

Connect to your server via SSH and use the following commands:

Basic version check commands

PHP
```
php -v
```
Nginx
```
nginx -v
```
MySQL / MariaDB
```
mysql -V
```
Apache
- on CentOS / Rocky / AlmaLinux:
```
httpd -v
```
- on Debian / Ubuntu:
```
apache2 -v
```
- or
```
apachectl -v
```

Additional commands

PHP-FPM (if used)
```
php-fpm -v
```
MariaDB (if used instead of MySQL)
```
mariadb -V
```
PostgreSQL
```
psql --version
```
Redis
```
redis-cli --version
```
Node.js
```
node -v
```
Composer
```
composer --version
```

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Useful tips

To get detailed PHP information including all loaded modules:
```
php -i
```
To check the version of a specific PHP extension:
```
php -m | grep -i имя_модуля
```

These commands work on most modern Linux distributions and allow you to quickly get the information you need.

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