need JSON extension to install Composer on CentsOS 7 w/ PHP 7

I have a LEMP stack running and I’m working on installing Laravel when I’ve ran into a snag trying to install Composer.

I execute this: curl -sS | php

and I get this:

Some 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 json extension is missing.
Install it or recompile php without --disable-json

I recently upgraded PHP to v7.0.14 and didn’t know that JSON wasn’t installed and/or configured, so I attempted to install the extension via pecl, but is apparently deprecated for PHP v7 in favor of "channel://".

I’m not use to running CentOS so I’m not sure how to tackle this. how do I install the JSON extension to allow Composer to install?


I realized I followed this guide: DO: Upgrade php7 on centos 7

and I found a json package that worked from the IUS Repository where I got my PHP7 install.

this solved it: sudo yum install php70u-json

Show comments

Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.

Glad you’ve got it solved. The PHP versions that ship with most Linux distributions can be pretty light on extensions/modules by default but there are many pre-built ones available in the distro’s repository that can be installed by yum, dnf or apt.

For example, on Ubuntu 16.04 this issue would be solved with:

apt-get update;
apt-get install php7.0-json;