curl -sS https://getcomposer.org/installer | sudo php -- --install- dir=/usr/local/bin --filename=composer
Quando eu executo o comando acima no terminal, recebo esta resposta:
Some settings on your machine make Composer unable to work properly.
Make sure that you fix the issues listed below and run this script again:
The json extension is missing.
Install it or recompile php without --disable-json
The phar extension is missing.
Install it or recompile php without --disable-phar
The iconv OR mbstring extension is required and both are missing.
Install either of them or recompile php without --disable-iconv
No Ubuntu 16.04 e posterior, o compositor pode ser instalado a partir dos repositórios padrão do Ubuntu. Abra o terminal e digite:
sudo apt install composer
O gerenciador de dependências do Composer para PHP ajuda você a declarar, gerenciar e instalar dependências de projetos PHP, garantindo que você tenha a pilha certa em todos os lugares.