MS Dynamics CRM connectivity with PHP

I have created a trial account on  https://portal.microsoftonline.com/ for Dynamics CRM.

CRM is accessable from https://<myorgname>.crm.dynamics.com.

now want to integrate it with my php based web site. I don't know how to achieve it also i am new to php.

I want to authenticate user from dynamics get contacts, etc.

I have tried mulitple options like

https://github.com/Ben-Speakman/PHP-Dynamics-Online-CRM-2011-SOAP-Class