Upgrade PHP version on Mac

php.cmd

# 1. Check where your current PHP is located
> $ which php
# ...which will result in smoething like this
> $ /usr/local/bin/php

# 2. Unlink the current link of PHP
> $ unlink /usr/local/bin/php

# 3. Install PHP
# Change the PHP version on the end
> $ curl -s http://php-osx.liip.ch/install.sh | bash -s 7.1

# 4. Create new link
# Change the PHP version based on the version you just installed
> $ ln /usr/local/php5-7.1.9-20170914-100859/bin/php /usr/local/bin/php