BuilderBase.php

<?php


class BuilderBase{


    protected $cache_id;

    /**
    * $rows['x'] = array(
    *   'id' => 'x',
    *   'weight' => 0,
    *   'title' => ''.
    *   'settings' => array(),
    * );
    */
    protected $rows;

    /**
    * $columns['x'] = array(
    *   'id' => 'y',
    *   'parent' => 'x'
    *   'weight' => 0,
    *   'title' => '',
    *   'settings' => array(),
    * );
    *
    *
    */
    protected $columns;


    /**
    * $contents['z'] = array(
    *   'id' => 'z',
    *   'parent'=> 'y',
    *   'weight' => 0,
    *   'title' => '',
    *   'settings' => array(),
    * );
    */
    protected $contents;


    public function __construct(){

        $data = cache_get($this->cache_id);

        $this->rows = $data['rows'];
        $this->columns = $data['columns'];
        $this->contents = $data['contents'];

    }

    public function getElement($type = 'row', $id){

        switch $type{

            case 'row':
                return $this->rows[$id];
            break;

            case 'column':
                return $this->columns[$id];
            break;

            case 'content':
                return $this->contents[$id];
            break;
        }

    }

    public function setElement($type = 'row', $id = NULL, $data = array()){
        $elements = array(
            'row' => 'rows';
            'column' => 'columns',
            'content' => 'contents',
        );
        if(empty($id)){

            $id = uniqid($type.'_');
        }


        if(isset($elements[$type])){
            $this->$elements[$type][$id] = $data;
        }else{

            $this->$type[$id] = $data;
        }

        // do save element to Object attributes here.

        // call to update function save builder to cache.
        $this->update();

    }


    /**
    * Do save builder data to cache when Object changed.
    */
    public function update(){

        $data = get_object_vars($this);
        // example to save builder to cache.
        cache_save($this->cache_id, $data);

    }

    // Now idea for render this Builder

    public function render(){

        // Idea here.
    }



}



// #version 2 *** =======  *////////////////

<?pph

class BuilderBase{


    protected $cache_id;
    protected $elements;




    public function __construct(){

        $data = cache_get($this->cache_id);

        $this->elements = $data['elements'];
    }

    public function __get($id){


        return isset($elements->$id) ? $elements->$id : NULL;
    }


    public function __set($id, $element){



        // this is how element array look like.

        /*$element = array(
            '#type' => 'row',
            '#id' => $id,
            '#settings' => array(),
            '#weight' => 0,
        ); */

        $this->elements->$id = $element;

        // detect object change. So we need save builder to cache.

        $this->update();
    }

    private function update(){

        cache_save($this->cache_id, $elements);
    }

    public function getAll(){
        return $this->elements;
    }


}



$builder = new BuilderBase();
$id = uniqid($type.'_');
$element = array(
    '#type' => 'row',
    '#id' => $id,
    '#settings' => array(),
    '#weight' => 0,
        '#parent' => '',
);

$id = 'abcxyz';
$builder->$id = $element;