Laravel Could not open input file: composer.phar解决办法

Could not open input file: composer.phar
If anyone else came this low on the page and still didn’t find a working answer (like I did), use this:

解决：

$ curl -sS https://getcomposer.org/installer | php

$ mv composer.phar /usr/local/bin/composer.phar

$ alias composer=’/usr/local/bin/composer.phar’

$ composer –version

sudo composer.phar update

sudo composer phar install

et voila! A working composer 🙂