When trying to install phinx executed the below command and it's giving the error as below
php composer.phar require robmorgan/phinx
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.
Problem 1
- The requested package robmorgan/phinx No version set (parsed as 1.0.0) is satisfiable by robmorgan/phinx[No version set (parsed as 1.0.0)] but these conflict with your requirements or minimum-stability.