Composer installing: the json extension is missing

Question

I wrote in Linux Terminal: curl -s https://getcomposer.org/installer | php It said:

 #!/usr/bin/env php
Some settings on your machine make Com         


        

Answer 1

I encountered the same error, but the difference was that when I ran php -m the json module was not listed, so I just installed json PHP module using the command below:

sudo yum install php-json

the error was fixed and I was able to install composer. I was using CentOS 8 stream, PHP7.2.