====== How To Install and Use PHP Composer on BlueOnyx 5209R ======

Ensure that you have met the following prerequisites before continuing with this tutorial:

  * Logged in as a user with sudo privileges
  * Have PHP 7 installed on your CentOS 7 system.

===== Installing Composer on BlueOnyx =====

The following steps describe how to install Composer on a BlueOnyx 5209R system.

==== 1. Pre-requisites ====

First install the PHP CLI (command line interface) package and all other dependencies with:

  sudo yum install php-cli php-zip wget unzip

==== 2. Get the installer ====

Once PHP CLI is installed, download the Composer installer script with:

  sudo php -d allow_url_fopen=1 -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"

==== 3. Verify ====

To verify the data integrity of the script compare the script SHA-384 hash with the latest installer hash found on the Composer Public Keys / Signatures page.

The following wget command will download the expected signature of the latest Composer installer from the Composer’s Github page and store it in a variable named HASH:

  HASH="$(wget -q -O - https://composer.github.io/installer.sig)"

To verify that the installation script is not corrupted run the following command:

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

If the hashes match, the following message will be shown:
  Installer verified


If the hashes don’t match you will see Installer corrupt. In this case, you need to redownload the Composer installation script and double check the value of the $HASH variable with echo $HASH. Once the installer is verified, you can continue with the next step.


==== 4. Install ====

Run the following command to install Composer in the /usr/local/bin directory:
  sudo php -d open_basedir= -d allow_url_fopen=1 composer-setup.php --install-dir=/usr/local/bin --filename=composer

==== 5. Verify ====

The last step is to verify the installation:

  php -d open_basedir= /usr/local/bin/composer