[FIXED] magento 2 composer installation issue in xampp with php 7.3.2

Issue

I just tried to install Magento 2 on my local server Xampp

I installed the composer and when tried to run composer install in command prompt , I got a error

amzn/amazon-pay-and-login-with-amazon-core-module 3.2.9 requires php 7.1.3- 7.2.0 your php version 7.3.2 doesn't satisfy that requirment.

How can I resolve this issue?

Solution

The current version of the amzn/amazon-pay-and-login-with-amazon-core-module package requires PHP version 7.2. You're on PHP version 7.3.2 which is not supported by version 3.2.9 of the package (yet).

You have multiple options to resolve the issue:

1. Downgrade to PHP 7.2.x to match the package's requirements.

2. Try to install a newer version of the package or directly from the master branch.

   If the compatibility with PHP 7.3 has been added to the package's composer.json i.e. in a newer version or on the master branch you can use:

   # install the master branch
   composer require 'amzn/amazon-pay-and-login-with-amazon-core-module:dev-master'
   
   # install a version greater than 3.2.9
   composer require 'amzn/amazon-pay-and-login-with-amazon-core-module:~3.2.10'
   

3. Ignore the PHP version requirement for a single composer install with:

   composer install --ignore-platform-reqs
   

4. Override the PHP version in your composer.json.

   "config": {
     "platform": {
        "php": "7.2.21"
     }
   }
   

   This way all subsequent runs of composer install|update will resolve the PHP to version 7.2.21.

Answered By - Nicolai Fröhlich