Install composer

[nscloud]

Hello,


Iam not an expert and learning the and enjoying the opensource, one of my website required composer to run

as I have tried many way to install it but everything failed. below is the error Iam getting if any one can help me please.

Code:

[root@cloud ~]# curl -sS https://getcomposer.org/installer | php
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 suhosin.executor.include.whitelist setting is incorrect.
Add the following to the end of your `php.ini` or suhosin.ini (Example path [for Debian]: /etc/php5/cli/conf.d/suhosin.ini):
   suhosin.executor.include.whitelist = phar

The php.ini used by your command-line PHP is: /etc/php.ini
If you can not modify the ini file, you can also run `php -d option=value` to modify ini values on the fly. You can use -d multiple times.

I have ready many tutorial to fix this issue bu no one worked. I have an website in the public directory of my page 
/var/sentora/hostdata/zadmin/public_html/my_domain_com/server

it need to run using php bin/chat-server.php

But it was showing below error 

Code:

The system is not properly installed.
Please run [composer install] from [server] folder.

So any one know how to install it as I also googled for an .zpp file of composer to install it from module admin but didn't find it. So any one know how to install it over command line or other way with our effecting to sentora installation or its running.