In this tutorial we’ll install composer quickly and learn how to update composer and use different php version paths with composer, Composer is a tool for dependency management in PHP. It allows you to declare the libraries your project depends on and it will manage (install/update) them for you.
Composer can be installed in your server quickly and its very easy to install :-
Installation of Composer
Switch into the /usr/local/bin directory.
cd /usr/local/bin
Download and installing Stable version of Composer by using cURL :
curl https://getcomposer.org/composer-stable.phar -o composer
Fix the permission also this will create global access to composer i.e. user having shell access can execute composer :
chmod 755 /usr/local/bin/composer
For ubuntu/debian you need to follow this steps :
ln -s /usr/local/bin/composer /usr/bin/composer
That’s it composer is successfully installed.
you can now use composer command in shell to execute.
Check Composer version :
composer -V
eg. :
[root@server bin]# composer -V Do not run Composer as root/super user! See https://getcomposer.org/root for details Continue as root/super user [yes]? yes Composer version 2.0.7 2020-11-13 17:31:06
Update composer upon new version releases :
to update composer you just need to run this command :
composer self-update
**it will update to stable latest version
Run different php version with the composer :
you need to user the full path for php bin and composer path with the composer sub command we use “install” command here as eg:
/path/to/php-bin /usr/local/bin/composer install
For CWP run composer as php selector and php-fpm selector :
For php selector :
/opt/alt/php56/usr/bin/php /usr/local/bin/composer install /opt/alt/php70/usr/bin/php /usr/local/bin/composer install /opt/alt/php71/usr/bin/php /usr/local/bin/composer install /opt/alt/php72/usr/bin/php /usr/local/bin/composer install /opt/alt/php73/usr/bin/php /usr/local/bin/composer install /opt/alt/php74/usr/bin/php /usr/local/bin/composer install /opt/alt/php80/usr/bin/php /usr/local/bin/composer install /opt/alt/php81/usr/bin/php /usr/local/bin/composer install
For php-fpm selector :
/opt/alt/php-fpm56/usr/bin/php /usr/local/bin/composer install /opt/alt/php-fpm70/usr/bin/php /usr/local/bin/composer install /opt/alt/php-fpm71/usr/bin/php /usr/local/bin/composer install /opt/alt/php-fpm72/usr/bin/php /usr/local/bin/composer install /opt/alt/php-fpm73/usr/bin/php /usr/local/bin/composer install /opt/alt/php-fpm74/usr/bin/php /usr/local/bin/composer install /opt/alt/php-fpm80/usr/bin/php /usr/local/bin/composer install /opt/alt/php-fpm81/usr/bin/php /usr/local/bin/composer install
For Cpanel/WHM :
ea-php71 /usr/local/bin/composer install ea-php72 /usr/local/bin/composer install ea-php73 /usr/local/bin/composer install ea-php74 /usr/local/bin/composer install ea-php80 /usr/local/bin/composer install ea-php81 /usr/local/bin/composer install
For other panel’s multi php refer to the official docs and paths for the php bin file
Troubleshoot :
if you get below error then php is not installed in default location you need to specify the path for php bin
/usr/bin/env: ‘php’: No such file or directory
Hello!
Can you have both version 1 and version 2 of composer? How?
yes possible in Linux os. Contact here we’re happy to help you
https://support.mysterydata.com/
I think this tutorial is missing a step to create a composer.json first
Composer could not find a composer.json file in /usr/local/bin
To initialize a project, please create a composer.json file. See https://getcomposer.org/basic-usage
composer.json is provided with script not with composer.
okay I see you need to skip that step since you’re not running different php versions and this steps are only for script installation not for the composer installation.
Hi when i run “/opt/alt/php-fpm73/usr/bin/php /usr/local/bin/composer install” on cwp it says there is no composer.json in root directory.
ensure you’re in correct root dir where composer.json is located for your script.
As you can see in this image when i run composer global about it shows me that composer directory in at “/root/.config/composer” where is also my composer.json file https://i.imgur.com/hUpr8mO.png but i still get that message about composer.json not being in /root