在Ubuntu下，PHPStorm主要通過Composer管理項目依賴，具體步驟如下：
sudo apt-get update、sudo apt-get install curl php-cli php-mbstring git unzip，再執行curl -sS https://getcomposer.org/installer -o composer-setup.php，然后輸入php -r "if (hash_file('SHA384', 'composer-setup.php') === '669656bab3166a7aff8a7506b8cb2d1c292f042046c5a994c43155c0be6190fa0355160742ab2e1c88d40d5be660b410') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"，最后輸入sudo php composer-setup.php --install-dir=/usr/local/bin --filename=composer并驗證安裝composer --version。/usr/local/bin/composer）。composer install安裝依賴，composer update更新依賴，composer remove <package_name>刪除依賴。
