I had composer v.1.3.2, today I updated it to 1.4.1, after done, I run 'composer' as usual but see nothing output. My php version is 7.1.3. OS is CentOS 7 in vagrant. (Composer below is composer.phar 1.4.1)
I've tried rm composer cache and re-download composer.phar. Even composer 1.3.2 can not work now.
Unexpected I found composer.phar can run by PHP v7.0.
Then I upload the same composer.phar to another CentOS 7 which has php v7.1.3. Composer works well there.
Have any idea about it? Any tips will be appreciated.