Magento CE Update from 2.2.2 to 2.3.1 on Ubuntu 16.0.4

[cakbulut]

Hello together,

I want update my Magento CE 2.2.2 to Magento CE 2.3.1 with the Update Wizard on Ubuntu 16.0.4.

The readiness check brings following error:

Check Component Dependency

We found conflicting component dependencies. Hide detail

Command "update" failed: Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Installation request for magento/product-community-edition 2.3.1 -> satisfiable by magento/product-community-edition[2.3.1].
- magento/product-community-edition 2.3.1 requires php ~7.1.3||~7.2.0 -> your PHP version (7.0.33) does not satisfy that requirement.

For additional assistance, see component dependency help .

My questions are:

How I can update PHP to required version?

Is the a guide where the update process is explained?

Can I use the composer, if yes is there a guide?

Best regards

Cetin

[deepak_gupta10]

Magento 2.3.X versions requires PHP 7.1.3+, 7.2.x and your PHP version is 7.0.33 which Magento 2.3.X series don't supports .

For upgrading your PHP version you can contact your Server Provider to upgrade it to Magento 2.3.X supportable PHP version .

You can find Magento 2.3.X requirements at -https://devdocs.magento.com/guides/v2.3/install-gde/system-requirements-tech.html

You can install this latest Magento version via Composer by running this command in terminal

composer create-project --repository=https://repo.magento.com/ magento/project-community-edition <install-directory-name>

If Issue Solved, Click Kudos/Accept As solutions.