Laravel 5 - Get AngularJS controller variable in PHP clause

How can I get AngularJS controller variable in PHP clause?

I tried <?php $user = User::find()?> but it doesn't work.

message.blade.php

<div ng-repeat="message in currentChat.messages">

    <?php $user = User::find()?>

    <div>
        <span>User @</span>
    </div>
</div>

via Chebli Mohamed