Class tree for mount tree

Tree.php

<?php

namespace App\Helpers;

class Tree
{
    public $total;
    public $hasUp;
    public $hasDown;
    public $id;
    public $name;
    public $email;
    public $username;
    public $treeDefault;
    public $network;

    public function __construct( $id )
    {
        $this->total = 'total users';
        $this->hasUp = 'get user up in array';
        $this->hasDown = 'get user down in array';
        $this->id = $id;
        $this->name = $this->getUser('name');
        $this->email = $this->getUser('email');
        $this->username = $this->getUser('username');
        $this->treeDefault = $this->getTreeJson( $id );
        $this->network = $this->getNetwork( $id );
    }


    /**
     * @param $field
     * @return mixed
     */
    public function getUser( $field )
    {
        $user = \App\Models\User::where( 'id', $this->id )->first();
        return $user[ $field ];
    }

    /**
     * @param null $id
     * @return string
     */
    public function getTreeJson( $id = null )
    {
        return json_encode( $this->getNetwork( $id ) );
    }

    /**
     * Mount Tree Array
     * @return array
     */
    public function getNetwork( $id = null )
    {
        $hasId = (isset($id) ? $id : $this->id);
        $network = \App\Models\Network::where( 'user_id', $hasId )->first();
        $tree = json_decode( $network['users'] );

        foreach( $tree as $key => $item ) {
            $newTree[ $key ] = ($item->user != '' ? new Tree( $item->user ) : null);
        }

        return (isset($newTree) ? $newTree : null);
    }
}