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How to Install Composer and PHPMailer


This article explains how to send emails with a PHP application using PHPMailer. Before doing so, however, you must use Composer to download PHPMailer and automatically create an autoloader file.

Note: Users often do not know how to proceed, hence this article.

Note:The Glossary contains explanations on multiple topics and can be consulted to clarify certain terms.

Step 1: Installation of Composer

First of all, you need to connect to the N0C account via SSH (how). Then, you can proceed with the installation.

Note: In the following commands, “user” must be replaced by the username of the N0C account in question.

  1. Start by entering the following commands:

php -r "readfile('https://getcomposer.org/installer');" > composer.php

php composer.php

  1. The following message will appear:

All settings correct for using Composer
Composer (version 2.3.4) successfully installed to: /home/zjpqumjq/composer.phar
Use it: php composer.phar

  1. Type this line of code:

nano .bash_profile

  1. Add this line of code:

alias composer="php /home/user/composer.phar"

  1. Finally, reload the bash_profile, which will allow us to invoke the command without having to specify its path:

source ~/.bash_profile

  1. Now you just have to type “composer“:

Step 2: Installation of PHPMailer

Make sure that you have installed Composer and that you are still connected via SSH, as explained before.

  1. Create the desired folder for PHPMailer:

mkdir mail_app

  1. Move to the active current working directory (CWD):

cd mail_app

  1. Install PHPMailer with the Composer command:

composer require phpmailer/phpmailer

  1. Here is the output of Composer for the installation of php_mailer:
  1. Here, there is nothing to reload normally. It is in the script that we must indicate the path to PHPMailer:


Updated on February 8, 2024

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