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How to uninstall composer 2 Question Question
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Question

How to install composer 2

Posted April 15, 2021 2.5k views
UbuntuPHPUbuntu 20.04

Hello

https://www.digitalocean.com/community/tutorials/how-to-install-and-use-composer-on-ubuntu-20-04

how to upgrade to version 2 ??
command, composer self-update –2 , is not defined !!

Also as non root user:
fileputcontents(/var/www/mywebsite/vendor/composer/autoload_classmap.php): failed to open stream: Permission denied.

Regards, Tjeu

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tjeumoonen
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tjeumoonen

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How to uninstall composer 2 Question Question
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1 answer
bobbyiliev April 15, 2021

Hi there,

In case that you’ve installed composer with apt already you might have to remove the package first and then follow the steps from the tutorial:

  • Remove the current installation:
sudo apt remove composer
  • Install the latest version:
php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
php -r "if (hash_file('sha384', 'composer-setup.php') === '756890a4488ce9024fc62c56153228907f1545c228516cbf63f885e036d37e9a59d27d63f46af1d4d07ee0f76181c7d3') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
sudo php composer-setup.php --install-dir=/usr/local/bin --filename=composer
php -r "unlink('composer-setup.php');"

Let me know how it goes.
Regards,
Bobby

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  • tjeumoonen April 15, 2021

    Do it in the project dir. /var/www/mywebsite

    Example
    type: php composer.phar
    type: php composer.phar –version

    use sudo if necessary

    Example: sudo php composer.phar dump-autoload
    sudo php composer.phar install
    Continue as root/super user [yes]? yes

    vendor/composer = only root access

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  • tjeumoonen April 16, 2021

    It was a big help, thanks Bobby.

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