1, check whether the installation
composer --version
2, download and install
php -r "copy('https://install.phpcomposer.com/installer', 'composer-setup.php');"
php composer-setup.php
All settings correct forusingComposerDownloading...Composer(version 1.6.5) successfully installed to:/root/composer.phar Use it: php composer.phar
3, the mobile composer.phar, so you can make global calls composer:
mv composer.phar /usr/local/bin/composer
4, the mirror switch for domestic
composer config -g repo.packagist composer https://packagist.phpcomposer.com
5. Update composer:
composer selfupdate
composer selfupdate