Arman

class Sms
{
    protected static $instances = [];

    public static function getInstance($id = 'default')
    {
        $map = [
            'first' => 'FirstSmsHandler',
            'second' => 'SecondSmsHandler',

            'default' => 'FirstSmsHandler',
        ];

        if (!isset(self::$instances[$id])) {
            if (!isset($map[$id])) {
                throw new \Exception(sprintf('Unknown hadler `%s`', $id));
            }

            $handler = new $map[$id];

            self::$instances[$id] = new self($handler);
        }

        return self::$instances[$id];
    }

    protected $handler;

    public function __construct(SmsHandler $handler)
    {
        $this->setHandler($handler)
    }

    public function setHandler(SmsHandler $handler)
    {
        return $this->handler = $handler;
    }

    public function changeHandlerByName($handlerName)
    {
        $map = [
            'first' => 'FirstSmsHandler',
            'second' => 'SecondSmsHandler',

            'default' => 'FirstSmsHandler',
        ];

        if (!isset($map[$handlerName])) {
            throw new \Exception(sprintf('Unknown handler `%s`', $handlerName));
        }

        $handler = new $map[$handlerName];

        $this->setHandler($handler);

        return $this;
    }

    public function __call($name, $arguments)
    {
        return call_user_func_array([$this->handler, $name], $arguments);
    }
}

$sms = new Sms(new FirstSmsHandler());
$sms->changeHandlerByName($_POST['provider']);

$sms = Sms::getInstance($_POST['provider']);

$sms->getBalance();

$obj = json_decode($homepage);
echo $obj->name_ru.'</br>';

$previews = array_slice($obj->screen_film, 0, 3);

foreach($previews as $preview) {
    echo '<img src="' . $preview->preview . '">';
}

// update 2
// Собираем всех
$creators = [];

foreach ($obj->creators->director as $director) {
    $creators[] = $director->name_person_ru;
}

// макс первых 6
$creators = array_slice($creators, 0, 6);

// SQL
$sql = 'INSERT *** VALUES("'. implode('", "', $creators) .'")';

<?php

namespace MyApp;

use \Pchart_Class;

class MyClass
{
    public function setClass(Pchart_Class $pchartClass)
    {
    }
}

SELECT 
    `a`.`id` AS  `projectId`,
    `a`.`url` AS `projectUrl`,
    GROUP_CONCAT(`c`.`photo` SEPARATOR ', ') AS `photos`
FROM `projects` AS `a`
LEFT JOIN `personal` AS `b` ON `b`.`project` = `a`.`id`(?)
LEFT JOIN `users` AS `c` ON  `c`.`id` = `b`.`user`