IMPORTANT: In the following commands, replace /home/your_username/bin with the path to your current account's home directory (eg. /home/bob/bin). Using the ~ shorthand will result in a failure.
Posted October 11th, 2019. Visit Composer's download page for a more recent version.
The only part of this script that is different from what Composer gives you on their download page is --install-dir=/home/your_username/bin --filename=composer -- that's the part that will save you some hassle and make it easy to run Composer anywhere on your system.
Run the following to install Composer:
php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
php -r "if (hash_file('sha384', 'composer-setup.php') === 'a5c698ffe4b8e849a443b120cd5ba38043260d5c4023dbf93e1558871f1f07f58274fc6f4c93bcfd858c6bd0775cd8d1') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
php composer-setup.php --install-dir=/home/your_username/bin --filename=composer
php -r "unlink('composer-setup.php');"
To run Composer, you should simply have to type composer in your command line. Enjoy!
You'll want to run this from a directory with composer.json in it to have these commands actually do anything.
If you're not sure what you're doing and you're in an existing repository, do not run composer update. Just run composer install.
Some commands to get started are composer (lists commands), composer help, composer install.
More instructions: https://getcomposer.org/download/
Make sure you add the vendor/ folder Composer creates to you .gitignore if you're using Git.
Should I commit the dependencies in my vendor directory? (no)