php library or project
<p>Right now I am working on web app and we need following functionality for our app(customers)</p>

<ol>
<li>web based permissioning </li>
<li>Content(task writing articles) assigning and scheduling</li>
<li>moderating (approving/editing/deleting)</li>
<li>Can connect to facebook twitter and other social sites for collecting statics for particular article.</li>
</ol>

<p>Please help me </p>
