Could not open input file: composer.phar

Question

I am trying to install zendframework using composer tool in wamp server.

The following steps are done towards installation

1. I downlo

Answer 1

I had the same issue when trying to use php composer install in a local directory on my Apache server for a laravel project I cloned from Github. My problem was I had already setup composer globally on my Ubuntu 18 machine.
Adding sudo instead of php started the install of a whole slew of packages listed in the json.lock file i.e. sudo composer install.