At some point you may get this warning.
#!/usr/bin/env phpSome settings on your machine make Composer unable to work properly.Make sure that you fix the issues listed below and run this script again:The detect_unicode setting must be disabled.Add the following to the end of your `php.ini`:detect_unicode = OffI got the working solution here:
Install Composer for PHP with detect_unicode = Off as a php.ini file does not exist
“There are a few solutions online, but the easiest I found was on Stack Overflow. The problem is that the PHP CLI doesn’t load the same php.ini by default, and unlike on most Linux installations there isn’t a seperate php-cli.ini and seemingly /etc/php.ini.default doesn’t load so much. You can pass it as a runtime parameter though:”
You basically run open Terminal and copy/paste the following command and hit Enter key.
sudo url -s getcomposer.org/installer | php -d detect_unicode=Off