Install Composer in XAMPP 1.8.1 and Windows 10 (x64)

Prerequisites:

• Windows 10 
• XAMPP work

Make sure openssl extension is enable in php.ini:
extension=php_openssl.dll

Follow this step to install composer

1. Open cmd Windows
2. Donwload installer by running this command

   php -r "readfile('https://getcomposer.org/installer');" > composer-setup.php

   for example*

   D:\xampp\php>php -r "readfile('https://getcomposer.org/installer');" > composer-setup.php

3. Validate your composer-setup.php by running 

   php -r "if (hash_file('SHA384', 'composer-setup.php') === 'a52be7b8724e47499b039d53415953cc3d5b459b9d9c0308301f867921c19efc623b81dfef8fc2be194a5cf56945d223') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"

   for example*:

   D:\xampp\php>php -r "if (hash_file('SHA384', 'composer-setup.php') === 'a52be7b8724e47499b039d53415953cc3d5b459b9d9c0308301f867921c19efc623b81dfef8fc2be194a5cf56945d223') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
   Installer verified

4. Install your composer by running

   php composer-setup.php

   for example*:

   D:\xampp\php>php composer-setup.php
   Some settings on your machine may cause stability issues with Composer.
   If you encounter issues, try to change the following:
   The OpenSSL library (0.9.8x) used by PHP does not support TLSv1.2 or TLSv1.1.
   If possible you should upgrade OpenSSL to version 1.0.1 or above.
   Downloading 1.0.3...
   Composer successfully installed to: D:\xampp\php\composer.phar
   Use it: php composer.phar

5. Remove composer-setup.php** by running:

   php -r "unlink('composer-setup.php');"

   for example*:

   D:\xampp\php>php -r "unlink('composer-setup.php');"

Note:
* in my case I use stand alone xampp in directory d:
** you do not have to save any composer-setup.php, it may change for a new version

 

References:

• http://i.justrealized.com/2013/install-composer-windows/
• https://getcomposer.org/download/