reinstall composer code example

Example 1: how uninstall composer

Delete the file composer.phar.
Delete the Cache Folder:
Linux: /home/<user>/.composer
Windows: C:\Users\<username>\AppData\Roaming\Composer

Example 2: where do you install composer

// Adding permissions after installing Composer on Mac OSX
sudo chmod 755 /usr/local/bin/composer.phar