What is SSH?

SSH means Secured Socket Shell. It is a network protocol that provides administrators with a secure way to access a remote computer. It also refers the suite of utilities that implement a protocol. SSH provides authentication and security. As it encrypts the data that are communicating between two computers connecting over an insecure network such as the Internet.

What is a PHP module?

PHP is an open-source scripting language that is mainly used to create dynamic web pages. PHP module is a servlet that allows running PHP embedded scripts. The servlet calls a native embedded PHP engine with library extensions. The PHP servlet allows running most of the existing PHP scripts.

How to check a particular PHP module installed via SSH?

The most common way to check whether or not a particular module installed in the command line is by using the command php -m|grep -i modulename

This command tells what modules the PHP command line tool is seeing but it does not say about what modules Apache’s PHP is able to load.

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